75079019689
This number is a prime.
7 5079019689
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The smallest emirp that is the sum of the first n palindromic triangular numbers
(1+3+6+55+66+...+16048884061+30416261403=75079019689). [Bajpai]
Submitted: 2016-07-17 19:17:51; Last Modified: 2016-07-17 21:03:37.
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