This number is a composite.

+ A Cullen prime is a prime number of the form n*2^n+1. 481899*2^481899+1 is the largest of the 13 known Cullen primes as of January, 2003; it was discovered by Masakatu Morii on Wednesday, September 30, 1998. [Dobb]

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