35353
This number is a prime.
Just showing those entries submitted by 'Beedassy': (Click here to show all)
The smallest palindromic prime with only prime digits that forms another palindromic prime when each digit d is repeated d times: 3335555533355555333. [Beedassy]
Printed from the PrimePages <t5k.org> © G. L. Honaker and Chris K. Caldwell