15555...22221 (71-digits)
This number is a prime.
1
5555555555 5555555555 5558888888 8888888888 8888882222 2222222222 2222222221
Single Curio View: (Seek other curios for this number)
A dihedral prime of prime length and prime sum of digits. Note also that each of the digits are repeated a prime number of times. [Patterson]
Submitted: 2003-11-21 18:44:23; Last Modified: 2008-02-04 03:22:42.
Printed from the PrimePages <t5k.org> © G. L. Honaker and Chris K. Caldwell