99999999944441

This number is a prime.

                                                             9999 9999944441

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

+ The reverse concatenation of the first three squares as many times is a prime and its digit reversal 14444999999999 is also an emirp. [Murthy]

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