2657
This number is a prime.
The American mathematician Lowell Schoenfeld (1920-2002)
proved that if the Riemann hypothesis was true, then
for all x greater than or equal to 2657.![]()
2657# + 1 is the smallest titanic primorial prime of form p# + 1. [Loungrides]
2657 has a peculiar property. It can be written as the sum of a power of its first digit and a power of its last digit,
i.e., 2657 = 2^8 + 7^4. [Leonardis]
Printed from the PrimePages <t5k.org> © G. L. Honaker and Chris K. Caldwell