1321
This number is a prime.
Single Curio View: (Seek other curios for this number)
For any prime n < 10^11 there is a k such that either
n*2^k + 1 or n*2^k - 1 has all its prime factors greater
than 1321. [Wesolowski]
Submitted: 2016-08-28 02:47:16; Last Modified: 2022-02-18 14:43:20.
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