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are all odd numbers prime?

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Leesa Johnson Profile
Leesa Johnson answered

No, it is not necessary.

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


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