Large Number Names & -illion Bases

Large Number Names & -illion Bases

Base -illion (short scale)	Base -illion (long scale)	Value	US, Canada and modern British (short scale)	Traditional British (long scale)	Traditional European (Peletier) (long scale)	SI Symbol	SI Prefix
1	1	106	Million	Million	Million	M	Mega-
2	1	109	Billion	Thousand million	Milliard	G	Giga-
3	2	1012	Trillion	Billion	Billion	T	Tera-
4	2	1015	Quadrillion	Thousand billion	Billiard	P	Peta-
5	3	1018	Quintillion	Trillion	Trillion	E	Exa-
6	3	1021	Sextillion	Thousand trillion	Trilliard	Z	Zetta-
7	4	1024	Septillion	Quadrillion	Quadrillion	Y	Yotta-
8	4	1027	Octillion	Thousand quadrillion	Quadrilliard	R	Ronna-
9	5	1030	Nonillion	Quintillion	Quintillion	Q	Quetta-
10	5	1033	Decillion	Thousand quintillion	Quintilliard
11	6	1036	Undecillion	Sextillion	Sextillion
12	6	1039	Duodecillion	Thousand sextillion	Sextilliard
13	7	1042	Tredecillion	Septillion	Septillion
14	7	1045	Quattuordecillion	Thousand septillion	Septilliard
15	8	1048	Quindecillion	Octillion	Octillion
16	8	1051	Sedecillion	Thousand octillion	Octilliard
17	9	1054	Septendecillion	Nonillion	Nonillion
18	9	1057	Octodecillion	Thousand nonillion	Nonilliard
19	10	1060	Novendecillion	Decillion	Decillion
20	10	1063	Vigintillion	Thousand decillion	Decilliard
21	11	1066	Unvigintillion	Undecillion	Undecillion
22	11	1069	Duovigintillion	Thousand undecillion	Undecilliard
23	12	1072	Tresvigintillion	Duodecillion	Duodecillion
24	12	1075	Quattuor­vigint­illion	Thousand duodecillion	Duodecilliard
25	13	1078	Quinvigintillion	Tredecillion	Tredecillion
26	13	1081	Sesvigintillion	Thousand tredecillion	Tredecilliard
27	14	1084	Septemvigintillion	Quattuordecillion	Quattuordecillion
28	14	1087	Octovigintillion	Thousand quattuordecillion	Quattuordecilliard
29	15	1090	Novemvigintillion	Quindecillion	Quindecillion
30	15	1093	Trigintillion	Thousand quindecillion	Quindecilliard
31	16	1096	Untrigintillion	Sedecillion	Sedecillion
32	16	1099	Duotrigintillion	Thousand sedecillion	Sedecilliard
33	17	10102	Trestrigintillion	Septendecillion	Septendecillion
34	17	10105	Quattuor­trigint­illion	Thousand septendecillion	Septendecilliard
35	18	10108	Quintrigintillion	Octodecillion	Octodecillion
36	18	10111	Sestrigintillion	Thousand octodecillion	Octodecilliard
37	19	10114	Septentrigintillion	Novendecillion	Novendecillion
38	19	10117	Octotrigintillion	Thousand novendecillion	Novendecilliard
39	20	10120	Noventrigintillion	Vigintillion	Vigintillion
40	20	10123	Quadragintillion	Thousand vigintillion	Vigintilliard
50	25	10153	Quinquagintillion	Thousand quinvigintillion	Quinvigintilliard
60	30	10183	Sexagintillion	Thousand trigintillion	Trigintilliard
70	35	10213	Septuagintillion	Thousand quintrigintillion	Quintrigintilliard
80	40	10243	Octogintillion	Thousand quadragintillion	Quadragintilliard
90	45	10273	Nonagintillion	Thousand quin­quadra­gint­illion	Quin­quadra­gint­illiard
100	50	10303	Centillion	Thousand quinquagintillion	Quinquagintilliard
101	51	10306	Uncentillion	Unquinquagintillion	Unquinquagintillion
110	55	10333	Decicentillion	Thousand quin­quinqua­gint­illion	Quin­quinqua­gint­illiard
111	56	10336	Undecicentillion	Ses­quinqua­gint­illion	Ses­quinqua­gint­illion
120	60	10363	Viginticentillion	Thousand sexagintillion	Sexagintilliard
121	61	10366	Unviginticentillion	Unsexagintillion	Unsexagintillion
130	65	10393	Trigintacentillion	Thousand quinsexagintillion	Quinsexagintilliard
140	70	10423	Quadra­gintacent­illion	Thousand septuagintillion	Septuagintilliard
150	75	10453	Quinqua­gintacent­illion	Thousand quin­septua­gint­illion	Quin­septua­gint­illiard
160	80	10483	Sexagintacentillion	Thousand octogintillion	Octogintilliard
170	85	10513	Septuagintacentillion	Thousand quinoctogintillion	Quinoctogintilliard
180	90	10543	Octogintacentillion	Thousand nonagintillion	Nonagintilliard
190	95	10573	Nonagintacentillion	Thousand quinnonagintillion	Quinnonagintilliard
200	100	10603	Ducentillion	Thousand centillion	Centilliard
300	150	10903	Trecentillion	Thousand quinqua­gintacent­illion	Quinqua­gintacent­illiard
400	200	101203	Quadringentillion	Thousand ducentillion	Ducentilliard
500	250	101503	Quingentillion	Thousand quinqua­gintaducent­illion	Quinqua­gintaducent­illiard
600	300	101803	Sescentillion	Thousand trecentillion	Trecentilliard
700	350	102103	Septingentillion	Thousand quinqua­gintatrecent­illion	Quinqua­gintatrecent­illiard
800	400	102403	Octingentillion	Thousand quadringentillion	Quadringentilliard
900	450	102703	Nongentillion	Thousand quinqua­ginta­quadringent­illion	Quinqua­ginta­quadringent­illiard
1000	500	103003	Millinillion	Thousand quingentillion	Quingentilliard