This number is a composite.
Just showing those entries submitted by 'Rivera':
(Click here to show all)
7072833120 is the smallest b>1 such that b^(2^n)+1 is prime for n = 0, 1, 2, 3, 4, 5. By Yves Gallot. [Rivera]
Printed from the PrimePages <t5k.org> © G. L. Honaker and Chris K. Caldwell