2749

This number is a prime.

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

To our current knowledge, the largest known prime number N such that the number having N binary digits, all equal to 1 except for 0's in prime positions, 2^N - 1 - sum( 2^(p-1); primes p < N ), is again a prime. [Hasler]