10010...11111 (207-digits)
This number is a probable-prime (likely to be a prime but we have not (re-)proven it on this site).
1001010 1110101110 1011101111 1010111110 1110101110 1111101111 1010111110
1110101111 1011101111 1011111110 1110101110 1011101111 1111111110 1110111110
1011111111 1010111110 1111101110 1111101111 1010111111 1110101110 1011111111
As of 2009, the largest known prime that shows the distribution of prime numbers using "0" for primes and "1" for nonprime numbers. Found by Charles R. Greathouse IV.
Printed from the PrimePages <t5k.org> © G. L. Honaker and Chris K. Caldwell