View Full Version : Prove there are infinitely many primes congruent to 1 mod 3
04-03-2007, 10:06 PM
Prove that there are infinitely many primes congruent to 1 modulo 3.
PLease help me.
04-03-2007, 10:12 PM
I think I would try a proof by contradiction. If you assume that there are not infinitely-many such primes, so there is thus a greatest such prime, what can you conclude...?
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