# List of Names of Large Numbers

What are the names of large numbers? You are most likely familiar with million, billion or perhaps even trillion? Ever heard though of vigintillion, decillion, or quattuordecillion? Here is a table with names of very large numbers in math.

 Names of very big numbers in mathematics Name of the number Number Million 106 Billion 109 Trillion 1012 quadrillion 1015 quintillion 1018 sextillion 1021 septillion 1024 octillion 1027 nonillion 1030 decillion 1033 undecillion 1036 duodecillion 1039 tredecillion 1042 quattuordecillion 1045 quindecillion 1048 sexdecillion 1051 septemdecillion 1054 octodecillion 1057 novemdecillion 1060 vigintillion 1063 unvigintillion (or vigintunillion) 1066 duovigintillion (or vigintiduoillion) 1069 trevigintillion (or vigintitrillion) 1072 quattuorvigintillion (or vigintiquadrillion) 1075 quinvigintillion (or vigintiquintrillion) 1078 sexvigintillion (or vigintisextillion) 1081 septvigintillion (or vigintiseptillion) 1084 octovigintillion (or vigintoctillion) 1087 nonvigintillion (or vigintinonillion) 1090 trigintillion 1093 untrigintillion 1096 duotrigintillion 1099 googol = ten-duotrigintillion 10100 skewer's number 10130 centillion 10303 googolplex 1010100 Skewes' Number 10101034

## Important things to keep in mind about the names of large numbers

1. Perhaps you have heard before people say “zillion,” “gazillion,” “prillion,” and "Mega-Million" for large numbers. These terms are not actual names for very big numbers. You may have noticed that they are not included in the list above. People use these names vaguely to just refer to numbers that are very big and unknown.

2. It will take you a long time to count very big numbers.

For example, 1 year has 31,536,000 seconds.

1 quadrillion = 1,000,000,000,000,000

1,000,000,000,000,000 / 31,536,000 = 31,709,791.9838 years

What does this mean? If it takes you 1 second to say each number, it will take you more 31 million years to count from 1 all the way to 1 quadrillion. This is interesting since 1 quadrillion is still very small compared to the numbers that are towards the bottom of the list above.

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