13666666666666631
This number is a prime.
1366666 6666666631
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A palindromic prime with 13 6s between 13 and 31. Note that 13 and 31 are emirps. [Necula]
Submitted: 2004-01-01 23:11:07; Last Modified: 2008-01-30 17:28:00.
Printed from the PrimePages <t5k.org> © G. L. Honaker and Chris K. Caldwell