Decimal Numbers

Decimal Number Naming Conventions

Prefix-Unit

un-1

duo-2

tres-3

quattuor-4

quinqua-5

sex-6

septen-7

octo-8

novem-9

Suffix-Unit

-illion 0

-decillion 10

-vigintillion 20

-trigintillion 30

-quadragintillion 40

-quinquagintillion 50

-sexagintillion 60

-septuagintillion 70

-octogintillion 80

-nonagintillion 90

-centillion - 100

-ducentillion - 200

-gentillion

-Millinillionth- 1000

Decimal Numbers

ten - 0123456789

hundreds

thousands

1 million

2 billion

3 trillion

4 quadrillion

5 quintil­lion

6 sextillion

7 septillion

8 octillion

9 nonillion

10 decillion

11 undecillion

12 duodecillion

13 tre­decillion

14 quattuordecillion

15 quindecillion

16 sexdecillion

17 septendecillion

18 octodecillion

19 novemdecillion

20 vigintillion

21 viginti-unillion

22 vigin ti-duillion

23 viginti-treillion

24 viginti-quattroillion

25 viginti-quintillion

26 viginti-sextillion

27 viginti-septillion

28 viginti-octillion

29 viginti-noveillion

30 trigintillion

31 triginti-unillion

40 quadragintil­lion

50 quinquagintillion

60 sexagintillion

70 septuagintillion

80 octagintillion

90 nonagintillion

100 centillion

101 centi-unillion

110 centi-decillion

120 centi-vigintillion

200 ducentillion

300 trecentillion

400 quadringentillion

500 quingentillion

600 sexgentillion

700 septingentillion

800 octin­tillion

900 nongentillion

1000 decingentillion

1100 decingenti-decillion

1200 decingenti-duodecillion

1300 decingenti-tre­decillion

2000 bi-decingentillion

3000 tri-decingentillion

4000 quadri-decingentillion

5000 quin­ti-decingentillion

6000 sexti-decingentillion

7000 septi-decingentillion­

8000 octi-decingentillion

9000 noni-decingentillion

10000 deci-decingentillion