3215031751

This number is a composite.

+ The strong k-pseudoprime test for k = 2, 3, 5, 7, correctly identifies all primes below 2.5 x 10^10 with only one exception, i.e., 3215031751 = 151*751*28351. [Rivera]

(There is one curio for this number that has not yet been approved by an editor.)

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