# 10000 (number)

 ← 9999 10000 10001 →
Cardinalten thousand
Ordinal10000th
(ten thousandth)
Factorization24· 54
Roman numeralX
Unicode symbol(s)X, ↂ
Greek prefixmyria- (obsolete)
Latin prefixdecamilli-
Binary100111000100002
Ternary1112011013
Quaternary21301004
Quinary3100005
Senary1141446
Octal234208
Duodecimal595412
Vigesimal150020
Base 367PS36

 ← 9999 10000 10001 →
Cardinalten thousand
Ordinal10000th
(ten thousandth)
Factorization24· 54
Roman numeralX
Unicode symbol(s)X, ↂ
Greek prefixmyria- (obsolete)
Latin prefixdecamilli-
Binary100111000100002
Ternary1112011013
Quaternary21301004
Quinary3100005
Senary1141446
Octal234208
Duodecimal595412
Vigesimal150020
Base 367PS36

10000 (ten thousand) is the natural number following 9999 and preceding 10001.

## Name

Many languages have a specific word for this number: in Ancient Greek it is μύριοι (related to the word myriad in English), in Aramaic ܪܒܘܬܐ, in Hebrew רבבה (revava), in Chinese 萬/万 (Mandarin wàn, Cantonese maan6), in Japanese 万/萬 [man], in Korean 만/萬 [man], and in Thai หมื่น [meun]. It is often used to mean an indefinite very large number.[1]

The Greek root was used in the earlier versions of the metric system in the form myria-.

The number 10000 can also be written 10,000 (UK and US), 10.000 (Europe mainland), 10 000 (transition metric), or 10•000 (with the dot raised to the middle of the zeroes; metric).

## In time

10,000 days can be expressed in these alternative units:

• 864,000,000 seconds
• 14,400,000 minutes
• 240,000 hours
• 1428 weeks (rounded down)

## Selected 5-digit numbers (10001–19999)

 Mathematics portal

## Notes

1. ^ On the basis that it did not then (November 2011) appear in Sloane's On-Line Encyclopedia of Integer Sequences.

## References

1. ^ http://www.merriam-webster.com/dictionary/myriad (Merriam-Webster's Online Dictionary)
2. ^ Climate Timeline Information Tool
3. ^
4. ^ NASA Project: Columbia
5. ^ http://www.gutenberg.org/etext/926 : Ten Thousand Dreams Interpreted
6. ^ Host: Stephen Fry; Panellists: Alan Davies, Al Murray, Dara Ó Briain and Sandi Toksvig (11 November 2011). "Inland Revenue". QI. Series I. Episode 10. 19:55 minutes in. BBC. BBC Two.
7. ^ Higgins, Peter (2008). Number Story: From Counting to Cryptography. New York: Copernicus. p. 61. ISBN 978-1-84800-000-1.
8. ^ Higgins, ibid.