20000...00007 (61-digits)

This number is a prime.

         2 0000000000 0000000003 0000000000 0000000005 0000000000 0000000007

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

The first four successive prime-digit primes separated by nineteen zeros each is a prime of prime length and prime sum of digits. [Patterson]