5
This number is a prime.
Single Curio View: (Seek other curios for this number)
For a given prime p, at most 5 squares are short of
a power of 2 by p. (The maximal case, in particular,
corresponds to the Ramanujan-Nagell equation
x2 = 2n - 7). [Beedassy]
Submitted: 2015-01-15 14:29:48; Last Modified: 2020-07-26 18:27:11.
Printed from the PrimePages <t5k.org> © G. L. Honaker and Chris K. Caldwell