This number is a prime.

                                                              101 2345678901

Just showing those entries submitted by 'Loungrides': (Click here to show all)

+ The only emirp formed by inserting the sequence of positive digits, 1 - 9, between a double-digit number n and its reversal R(n), case (10, 01). [Loungrides]

Printed from the PrimePages <t5k.org> © G. L. Honaker and Chris K. Caldwell