12233...33221 (25-digits)

This number is a prime.

12233 3444455555 4444333221

Single Curio View: (Seek other curios for this number)

A palindromic prime formed from the first five digits, where each digit d is repeated d times in ascending and descending order. [Silva]

Submitted: 2004-10-28 11:30:32; Last Modified: 2009-03-05 01:47:20.