303272303
This number is a prime.
The smallest palindromic prime p such that the concatenations 1p1, 3p3, 7p7, and 9p9 are all primes. [De Geest]
Printed from the PrimePages <t5k.org> © G. L. Honaker and Reginald McLean
This number is a prime.
The smallest palindromic prime p such that the concatenations 1p1, 3p3, 7p7, and 9p9 are all primes. [De Geest]