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Search: Posts Made By: Dr Sardonicus
Forum: Miscellaneous Math 2022-04-18, 14:22
Replies: 2
Views: 889
Posted By Dr Sardonicus
I note that, if p == 1 (mod 3) then q = p^2 + p +...

I note that, if p == 1 (mod 3) then q = p^2 + p + 1 is divisible by 3.

Also, q^3 - 1 = (q-1)*(q^2 + q + 1). If p > 2 then p is the largest prime factor of q-1 (proof: exercise). Also, q == 1...
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