738197503

This number is a prime.

+ 738197503 + 1 is the first composite with 27 prime factors (11*2^26). The next prime that has a composite upper neighbor with more prime factors is 2147483647 (the 8th Mersenne prime). [Pfoertner]

Printed from the PrimePages <t5k.org> © G. L. Honaker and Chris K. Caldwell