11333...33311 (101-digits)
This number is a prime.
1 1333331313 1311313313 1333313113
1331333311 1111313111 1131311111 1333313313 1131333313 1331311313 1313333311
A Carrousel palindromic prime: it remains palprime if you change all the digits according to this scheme: 1
->3->7->9, producing three new palprimes. Found by Emmanuel Vantieghem. [Rivera]
Printed from the PrimePages <primes.utm.edu> © G. L. Honaker and Chris K. Caldwell