55784...00001 (68-digits)

This number is a prime.

  55784440 7209685138 1336800253 3861454979 5481767716 1574408556 0000000001

+ A prime expressed as the product of the first dozen prime primorials plus 1. Note that is has prime digital sum. [Patterson]

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