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My son asked me to tell him the names of very large numbers, so I did a little research and have discovered the names of large numbers up to 10180.

The names are based on United States and modern Brithish usage. The traditional British and traditional European names differ. Here goes:

The Suffix -illion is 103(n) + 3

M(i) + illion is 103(1) + 3 = 106

B(i) + illion is 103(2) + 3 = 109

Tr(i) + illion is 103(3) + 3 = 1012

Quadr + illion is 103(4) + 3 = 1015

Quint + illion is 103(5) + 3 = 1018

Sext + illion is 103(6) + 3 = 1021

Sept + illion is 103(7) + 3 = 1024

Oct + illion is 103(8) + 3 = 1027

Non + illion is 103(9) + 3 = 1030

Dec + illion is 103(10) + 3 = 1033

Un + dec + illion is 103(11) + 3 = 1036

Duo + dec + illion is 103(12) + 3 = 1039

Tre + dec + illion is 103(13) + 3 = 1042

Quattouro + dec + illion is 103(14) + 3 = 1045

Quin + dec + illion is 103(15) + 3 = 1048

Sex + dec + illion is 103(16) + 3 = 1051

Septen + dec + illion is 103(17) + 3 = 1054

Octo + dec + illion is 103(18) + 3 = 1057

Novem + dec + illion is 103(19) + 3 = 1060

Vi + gint + illion is 103(20) + 3 = 1063

Un + vi + gint + illion is 103(21) + 3 = 1066

Duo + vi + gint + illion is 103(22) + 3 = 1069

Tre + vi + gint + illion is 103(23) + 3 = 1072

Quattouro + vi + gint + illion is 103(24) + 3 = 1075

Quin + vi + gint + illion is 103(25) + 3 = 1078

Sex + vi + gint + illion is 103(26) + 3 = 1081

Septen + vi + gint + illion is 103(27) + 3 = 1084

Octo + vi + gint + illion is 103(28) + 3 = 1087

Novem + vi + gint + illion is 103(29) + 3 = 1090

Tri + gint + illion is 103(30) + 3 = 1093

Un + tri + gint + illion is 103(31) + 3 = 1096

Duo + tri + gint + illion is 103(32) + 3 = 1099

Tre + tri + gint + illion is 103(33) + 3 = 10102

Quattouro + tri + gint + illion is 103(34) + 3 = 10105

Quin + tri + gint + illion is 103(35) + 3 = 10108

Sex + tri + gint + illion is 103(36) + 3 = 10111

Septen + tri + gint + illion is 103(37) + 3 = 10114

Octo + tri + gint + illion is 103(38) + 3 = 10117

Novem + tri + gint + illion is 103(39) + 3 = 10120

Quadra + gint + illion is 103(40) + 3 = 10123

Un + quadra + gint + illion is 103(41) + 3 = 10126

Duo + quadra + gint + illion is 103(42) + 3 = 10129

Tre + quadra + gint + illion is 103(43) + 3 = 10132

Quattouro + quadra + gint + illion is 103(44) + 3 = 10135

Quin + quadra + gint + illion is 103(45) + 3 = 10138

Sex + quadra + gint + illion is 103(46) + 3 = 10141

Septen + quadra + gint + illion is 103(47) + 3 = 10144

Octo + quadra + gint + illion is 103(48) + 3 = 10147

Novem + quadra + gint + illion is 103(49) + 3 = 10150

Quinqua + gint + illion is 103(50) + 3 = 10153

Un + quinqua + gint + illion is 103(51) + 3 = 10156

Duo + quinqua + gint + illion is 103(52) + 3 = 10159

Tre + quinqua + gint + illion is 103(53) + 3 = 10162

Quattouro + quinqua + gint + illion is 103(54) + 3 = 10165

Quin + quinqua + gint + illion is 103(55) + 3 = 10168

Sex + quinqua + gint + illion is 103(56) + 3 = 10171

Septen + quinqua + gint + illion is 103(57) + 3 = 10174

Octo + quinqua + gint + illion is 103(58) + 3 = 10177

Novem + quinqua + gint + illion is 103(59) + 3 = 10180

Googolplex (1010100 or 10,000,000,000100 or 1010,000,000,000,000,000,000,000,
000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,
000,000,000,000,000,000) is the only recognized name designated for the largest “simple” number that I could find. If I did not make any mistakes, then a googolplex, when written out, will be a one followed by 185,185,185 lines of zeros like the one below:

000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,

If you can find a name for a larger “simple” number, please let me know (I have heard about the googolplexian, but I don’t know if it is recognized).

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