This number is a composite.

Just showing those entries submitted by 'Kontobesar': (Click here to show all)

+ The proven prime 123447^1048576 - 123447^524288 + 1 is a 5338805-digit self number. It is the largest known non-Mersenne prime self number as of April 20th, 2019. [Kontobesar]

Printed from the PrimePages <primes.utm.edu> © G. L. Honaker and Chris K. Caldwell