Anonymous

are all odd numbers prime?

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Rooster Cogburn Profile
Rooster Cogburn , Rooster Cogburn, answered

There are exactly as many odd numbers as primes (Euclid, Cantor), and exactly one even prime (namely 2), so there must be exactly one odd nonprime (namely 1). Cosmologist: 3 is prime, yes it is true.... ... 10 is prime, 11 is prime, 101 is prime...

How to prove that all odd numbers are prime


Tom  Jackson Profile
Tom Jackson answered

Yes.

And one even number is prime---see Rooster's answer.

https://www.reference.com/math/prime-numbers-odd-5f0c2d756b96b334

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