13683...88363 (4359-digits)

This number is a prime.

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As of November 2004, (2^14479+1)/3 was the largest proven prime of the form N(p)=(2^p+1)/3. This form figures in the new Mersenne conjecture. N(14479) was proven prime by Marcel Martin's program Primo. [Broadhurst]

Submitted: 2004-11-11 00:05:10;   Last Modified: 2021-05-12 20:42:58.
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