Numbers 73,000,000s

A page of the Numeropedia - the Special Encyclopedia of Numbers

70,000,000 71,000,00072,000,00073,000,000 – 74,000,000

75,000,00076,000,00077,000,00078,000,00079,000,000

All Numbers  & [1M] & [10M- [20M] - [30M] - [40M] - [50M] - [60M] - [70M] - [80M] - [90M]  &  [100M]

1  - 10 - 100  - 1000 - 10,000 - 100,000 - 1M - 10M - 100M1B10B - 100B - 1T - 10T - 100T - 1Q ...

73,032,872

[Math.]  A pair of amicable numbers (73032872, 78469528).

 

73,939,133

[Math.]  The largest known right-truncatable prime number: itself, 7393913, 739391, 73939, 7393, 739, 73 and 7 are prime numbers. The largest known left-truncatable prime number is much longer: 357,686,312,646,216,567,629,137.

 

xy,abc,def

[Math.]  For any xy = 10 to 99, there are always six 6-digit numbers abc,edf such that the sum (xy+abc,def) is equal to one of 6 digit-rotations of 142,857 and the number xy,abc,def is a multiple of 142,857.

 

For any xy = 10 to 99, there are always twelve 6-digit numbers abc,edf such that the sum (xy+abc,def) is equal to one of 12 digit-rotations of 076,923 or 153,846 and the number xy,abc,def is a multiple of 76,923.