3251
This number is a prime.
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The larger term in the only pair of 4-digit emirps, (1523, 3251), whose both terms are of form x^2+2x+3, x > 0, (x=38 and x=56). [Loungrides]
Submitted: 2011-06-12 09:59:35; Last Modified: 2018-12-08 00:24:04.
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