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Old 2020-02-24, 13:21   #1
Mar 2018

17·31 Posts
Default Numbers that can be written in two different ways

4, 28 and 508 can be written as (2^n-4) for some n, but also as:

(3*s^2+1) for some s

Are there other numbers N that can be written as (2^n-4) and as (3*s^2+1)?

Last fiddled with by enzocreti on 2020-02-24 at 13:51
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