971
This number is a prime.
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The largest prime (emirp) formed from the complementary digits of the single-digit powers of 3, (3^0=1, 3^1=3, 3^2=9), i.e., 9, 7, 1. [Loungrides]
Submitted: 2012-10-01 06:19:44; Last Modified: 2019-04-16 18:20:47.
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