37337...54321 (1011-digits)

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

+ A titanic prime formed by concatenating the integers from 373 to 1, in descending order, then swapping the integers 9 and 26. [Rivera]

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