100000007
This number is a prime.
100000007 and 1000000007 are primes!
The largest prime factor of an odd perfect number must be at least 100000007. [Goto and
Ohno]
The smallest Mersenne number to contain more than 10^8 digits is 2^332192831 - 1, which contains 100000007 digits. Oddly enough, 100000007 is the smallest prime number that is greater than 10^8. [Cuenta]
The smallest prime with 9 digits is a naughty emirp. [Hasler]
(There are 2 curios for this number that have not yet been approved by an editor.)
Printed from the PrimePages <t5k.org> © G. L. Honaker and Chris K. Caldwell