11131...91451 (2344-digits)

This number is a probable-prime (likely to be a prime but we have not (re-)proven it on this site).

+ The smallest titanic prime formed from concatenation of first n multidigit odd numbers (case n=721). [Gupta]

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