# What comes after a trillion (If there is such a number)????

**URL:** <https://boards.straightdope.com/t/what-comes-after-a-trillion-if-there-is-such-a-number/7005>\
**Category:** Factual Questions\
**Created:** [February 8, 2000, 8:19pm UTC](https://boards.straightdope.com/t/what-comes-after-a-trillion-if-there-is-such-a-number/7005 "2000-02-08T20:19:00Z")\
**Posts on this page:** 20\
**Page:** 1

<div class="post-metadata">

**Author:** ![Frazer](https://avatars.discourse-cdn.com/v4/letter/f/4bbf92/32.png) [@Frazer](https://boards.straightdope.com/u/Frazer)\
**Post date:** [February 8, 2000, 8:19pm UTC](https://boards.straightdope.com/t/what-comes-after-a-trillion-if-there-is-such-a-number/7005/1 "2000-02-08T20:19:00Z")

</div>

I know that a billion comes after a million and it is a million million, but does a trillion mean a billion billion and if soo, what comes after that. Just one of these irrelevant thoughts i had…Thanks =)

---

<div class="post-metadata">

**Author:** ![Ezstrete](https://avatars.discourse-cdn.com/v4/letter/e/7ea924/32.png) [@Ezstrete](https://boards.straightdope.com/u/Ezstrete)\
**Post date:** [February 8, 2000, 8:23pm UTC](https://boards.straightdope.com/t/what-comes-after-a-trillion-if-there-is-such-a-number/7005/2 "2000-02-08T20:23:00Z")

</div>

Quadrillion------and then Quintillion

---

<div class="post-metadata">

**Author:** ![phouka](https://avatars.discourse-cdn.com/v4/letter/p/c5a1d2/32.png) [@phouka](https://boards.straightdope.com/u/phouka)\
**Post date:** [February 8, 2000, 8:24pm UTC](https://boards.straightdope.com/t/what-comes-after-a-trillion-if-there-is-such-a-number/7005/3 "2000-02-08T20:24:00Z")

</div>

A trillion and one!

(sorry!)

I think Europe has a different nomenclature, but here’s the American version:

1,000 = thousand  
1,000,000 = million  
1,000,000,000 = billion  
1,000,000,000,000 = trillion  
1,000,000,000,000,000 = quadrillion  
1,000,000,000,000,000,000 = quintillion  
1,000,000,000,000,000,000,000 = sextillion  
1,000,000,000,000,000,000,000,000 = septillion  
1,000,000,000,000,000,000,000,000,000 = octillion  
1,000,000,000,000,000,000,000,000,000,000 = nontillion  
1,000,000,000,000,000,000,000,000,000,000,000 = dectillion

I think. Didn’t Cecil do a column on this?

---

<div class="post-metadata">

**Author:** ![TheThill](https://avatars.discourse-cdn.com/v4/letter/t/35a633/32.png) [@TheThill](https://boards.straightdope.com/u/TheThill)\
**Post date:** [February 8, 2000, 8:24pm UTC](https://boards.straightdope.com/t/what-comes-after-a-trillion-if-there-is-such-a-number/7005/4 "2000-02-08T20:24:00Z")

</div>

A billion is not a million million but rather a thousand million. (It used to be the former in Britain, although they seem to have changed to the U.S. system in recent years – or can anyone make a more precise statement about that?) Adding another 3 zeroes each the following numbers follow: trillion, quadrillion, quintillion, sextillion, septillion, octillion… Using further Latin prefixes, you can of course continue this ad infinitum.

---

<div class="post-metadata">

**Author:** ![DrFidelius](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/drfidelius/32/3447_2.png) [@DrFidelius](https://boards.straightdope.com/u/DrFidelius)\
**Post date:** [February 8, 2000, 8:27pm UTC](https://boards.straightdope.com/t/what-comes-after-a-trillion-if-there-is-such-a-number/7005/5 "2000-02-08T20:27:00Z")

</div>

A trillion and one?

---

<div class="post-metadata">

**Author:** ![TheThill](https://avatars.discourse-cdn.com/v4/letter/t/35a633/32.png) [@TheThill](https://boards.straightdope.com/u/TheThill)\
**Post date:** [February 8, 2000, 8:27pm UTC](https://boards.straightdope.com/t/what-comes-after-a-trillion-if-there-is-such-a-number/7005/6 "2000-02-08T20:27:00Z")

</div>

Yes, in other European languages, the order is different. In German, it is as follows (with dots used instead of commas, btw):

1.000.000 (eine) Million  
1.000.000.000 Milliarde  
1.000.000.000.000 Billion  
1.000.000.000.000.000 Billiarde  
1.000.000.000.000.000.000 Trillion

etc.

---

<div class="post-metadata">

**Author:** ![manhattan](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/manhattan/32/7_2.png) [@manhattan](https://boards.straightdope.com/u/manhattan)\
**Post date:** [February 8, 2000, 8:28pm UTC](https://boards.straightdope.com/t/what-comes-after-a-trillion-if-there-is-such-a-number/7005/7 "2000-02-08T20:28:00Z")

</div>

Hello, **Frazer** , and welcome to the Straight Dope Message Board.

As **phouka** semi-recalls, **SDStaff Dex** authored the definitive answer to this question in a [Mailbag](http://www.straightdope.com/mailbag/mgazilli.html) item last year.

## It’s usually a good idea to check the [Archives](http://www.straightdope.com/columns/index.html) before posing a question here.

Livin’ on Tums, vitamin E and Rogaine

---

<div class="post-metadata">

**Author:** ![galen](https://avatars.discourse-cdn.com/v4/letter/g/ecc23a/32.png) [@galen](https://boards.straightdope.com/u/galen)\
**Post date:** [February 9, 2000, 4:52am UTC](https://boards.straightdope.com/t/what-comes-after-a-trillion-if-there-is-such-a-number/7005/8 "2000-02-09T04:52:00Z")

</div>

The only usage of quadrillion I’ve ever seen was the use of the word “quad” for quadrillion BTUs to describe national energy consumption.

---

<div class="post-metadata">

**Author:** ![C\_K\_Dexter\_Haven](https://avatars.discourse-cdn.com/v4/letter/c/b2d939/32.png) [@C\_K\_Dexter\_Haven](https://boards.straightdope.com/u/C_K_Dexter_Haven)\
**Post date:** [February 9, 2000, 5:01am UTC](https://boards.straightdope.com/t/what-comes-after-a-trillion-if-there-is-such-a-number/7005/9 "2000-02-09T05:01:00Z")

</div>

Manhatt already gave the link to all you need to know about names of large numbers, but I’d like to say that the times that you need numbers like quadrillion and umpfantasticillion is when you’re counting money in Unca Scrooge’s moneybin.

---

<div class="post-metadata">

**Author:** ![NanoByte](https://avatars.discourse-cdn.com/v4/letter/n/ecc23a/32.png) [@NanoByte](https://boards.straightdope.com/u/NanoByte)\
**Post date:** [February 9, 2000, 10:00am UTC](https://boards.straightdope.com/t/what-comes-after-a-trillion-if-there-is-such-a-number/7005/10 "2000-02-09T10:00:00Z")

</div>

10^33 (US) is 'decillion, not dectillion.

[Upper limit to the number of atoms in the universe](http://www.mindsports.net/I_Ching_Connexion/JavaVersion/Introduction/IntroCompiler.html) = 10^87. But [here](http://www.ideabank.com/Pages/insitesweekly/insites.6.01.98.html) it says the number of **electrons** in same is only 10^80-88.

I guess they’ve gone out fashion, but there used to be:

‘googol’ = 10^100 and  
'googolplex = 10^(10^100)

, at least in the head of someone called Milton Sirotta, according to my dictionary.

Ray (You need any larger #s, we supply them at extra cost – astronomical. But I thought the Scotch were. . .well. . .Scotch, and wouldn’t need to be so excessive.)

---

<div class="post-metadata">

**Author:** ![system](https://global.discourse-cdn.com/straightdope/original/2X/e/e489c3b7d8fce19c4b355dd4fc3f88cc39c34b87.png) [@system](https://boards.straightdope.com/u/system)\
**Post date:** [February 9, 2000, 1:58pm UTC](https://boards.straightdope.com/t/what-comes-after-a-trillion-if-there-is-such-a-number/7005/11 "2000-02-09T13:58:00Z")

</div>

OK, here’s the Mailbag article on googol and googolplex…

\<url\>[http://www.straightdope.com/mailbag/mgoogol.html](http://www.straightdope.com/mailbag/mgoogol.html)\</url\>

Probably should have been included in the first article, but what the heck, this way we get two slots for the price of one.  
[Note: This message has been edited by CKDextHavn]

---

<div class="post-metadata">

**Author:** ![TheThill](https://avatars.discourse-cdn.com/v4/letter/t/35a633/32.png) [@TheThill](https://boards.straightdope.com/u/TheThill)\
**Post date:** [February 9, 2000, 9:50pm UTC](https://boards.straightdope.com/t/what-comes-after-a-trillion-if-there-is-such-a-number/7005/12 "2000-02-09T21:50:00Z")

</div>

Of course in some countries’ currencies at some times, being a quadrillionaire is not quite as good as it sounds.

---

<div class="post-metadata">

**Author:** ![Sunspace](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/sunspace/32/1250_2.png) [@Sunspace](https://boards.straightdope.com/u/Sunspace)\
**Post date:** [February 9, 2000, 11:08pm UTC](https://boards.straightdope.com/t/what-comes-after-a-trillion-if-there-is-such-a-number/7005/13 "2000-02-09T23:08:00Z")

</div>

> [@](#):
>
> The only usage of quadrillion I’ve ever seen was the use of the word “quad” for Quadrillion BTUs to describe national energy consumption.

So, is that quadrillion 10^15 (a US, Canada quadrillion) or (10^6)^4 (a European quadrillion)?

BTU, British Thermal Unit, is in Canada the old Imperial measure of bulk energy usage; I’m not sure what we use now, probably joules with a really big exponent.

Presumably the US uses the BTU, but doesn’t call it Imperial. But there may be a difference, as the old Canadian (i.e. Imperial) gallon was different from the US gallon (4.54 L versus 3.85 L). Anyone with a more up-to-date knowledge able to correct me?

---

<div class="post-metadata">

**Author:** ![Max\_Torque](https://avatars.discourse-cdn.com/v4/letter/m/e9bcb4/32.png) [@Max\_Torque](https://boards.straightdope.com/u/Max_Torque)\
**Post date:** [February 10, 2000, 12:40am UTC](https://boards.straightdope.com/t/what-comes-after-a-trillion-if-there-is-such-a-number/7005/14 "2000-02-10T00:40:00Z")

</div>

Side note:

Japanese has words not only for 100 (hyaku) and 1,000 (sen) but also for 10,000 (man). So, pronouncing numbers larger than 10,000 takes some thought for us Westerners. You have to teach yourself to say not “one hundred thousand” but “ten ten-thousands”. A million is “one hundred ten-thousands”. Funky, eh?

---

<div class="post-metadata">

**Author:** ![Harmonious\_Discord](https://avatars.discourse-cdn.com/v4/letter/h/74df32/32.png) [@Harmonious\_Discord](https://boards.straightdope.com/u/Harmonious_Discord)\
**Post date:** [February 10, 2000, 12:52am UTC](https://boards.straightdope.com/t/what-comes-after-a-trillion-if-there-is-such-a-number/7005/15 "2000-02-10T00:52:00Z")

</div>

Author Dent is always after Trillian, but comes after Zaphod Beeblebrox. Proven by the fact that Trillian left the party with Zaphod Beeblebrox, and not Author Dent.

42

---

<div class="post-metadata">

**Author:** ![Momotaro](https://avatars.discourse-cdn.com/v4/letter/m/2bfe46/32.png) [@Momotaro](https://boards.straightdope.com/u/Momotaro)\
**Post date:** [February 10, 2000, 2:03pm UTC](https://boards.straightdope.com/t/what-comes-after-a-trillion-if-there-is-such-a-number/7005/16 "2000-02-10T14:03:00Z")

</div>

I though the British use a system that mirrored French, i.e.

```
        1,000,000 million
    1,000,000,000 milliard
1,000,000,000,000 billion

```

1,000,000,000,000,000 billiard  
etc.

Is is still the case?

---

<div class="post-metadata">

**Author:** ![AHunter3](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/ahunter3/32/368_2.png) [@AHunter3](https://boards.straightdope.com/u/AHunter3)\
**Post date:** [February 10, 2000, 8:14pm UTC](https://boards.straightdope.com/t/what-comes-after-a-trillion-if-there-is-such-a-number/7005/17 "2000-02-10T20:14:00Z")

</div>

American nomenclature:

NAME…ZEROES…“SERIES NAME”

thousand…3  
million…6…1s  
billion…9  
trillion…12  
quadrillion…15  
quintillion…18  
sextillion…21  
septillion…24  
octillion…27  
nonillion…30  
decillion…33…10s  
undecillion…36  
duodecillion…39  
tredecillion…42  
quattuordecillion…45  
quintdecillion…48  
sexdecillion…51  
septemdecillion…54  
octodecillion…57  
novemdecillion…60  
vigintillion…63…20s  
unvigintillion…66  
duovigintillion…69  
trevegintillion…72  
quattuorvigintillion…75  
quintovigintillion…78  
sextovigintillion…81  
septemvigintillion…84  
octovigintillion…87  
novemvigintillion…90  
trigintillion…93…30s  
untrigintillion…96  
duotrigintillion…99  
ten duotrigintillion.100 \<------------------also called the “googol”  
trevigintillion…102  
etc to\>\>\>  
quadragintillion…123…40s  
quinquagintillion…153…50s  
sexagintillion…183…60s  
septuagintillion…213…70s  
octogintillion…243…80s  
nonagintillion…273…90s  
centillion…303…100s

* * *

Designated Optional Signature at Bottom of Post

---

<div class="post-metadata">

**Author:** ![TheThill](https://avatars.discourse-cdn.com/v4/letter/t/35a633/32.png) [@TheThill](https://boards.straightdope.com/u/TheThill)\
**Post date:** [February 10, 2000, 11:25pm UTC](https://boards.straightdope.com/t/what-comes-after-a-trillion-if-there-is-such-a-number/7005/18 "2000-02-10T23:25:00Z")

</div>

Thank you. That should do for the time being.

---

<div class="post-metadata">

**Author:** ![handy](https://avatars.discourse-cdn.com/v4/letter/h/b5a626/32.png) [@handy](https://boards.straightdope.com/u/handy)\
**Post date:** [February 11, 2000, 1:39am UTC](https://boards.straightdope.com/t/what-comes-after-a-trillion-if-there-is-such-a-number/7005/19 "2000-02-11T01:39:00Z")

</div>

Nono, you forgot a zenzizenzizenzic!

---

<div class="post-metadata">

**Author:** ![Polycarp](https://avatars.discourse-cdn.com/v4/letter/p/82dd89/32.png) [@Polycarp](https://boards.straightdope.com/u/Polycarp)\
**Post date:** [February 11, 2000, 2:43am UTC](https://boards.straightdope.com/t/what-comes-after-a-trillion-if-there-is-such-a-number/7005/20 "2000-02-11T02:43:00Z")

</div>

[quote]  
1,000,000,000,000,000 billiard[/quot]

This provides an excellent reason not to play billiards with Bill Gates or Donald Trump! 🙂

[Next page](https://boards.straightdope.com/t/what-comes-after-a-trillion-if-there-is-such-a-number/7005.md?page=2)
