3 years ago

Odd couple. If n is an odd number greater than or equal to 3, can n+1 ever be prime? What if n equals 1?

1 answer:

8 0

No, because when adding 1 to any odd number it will become even, and all even numbers besides 2 are not prime. This means that if n was 1 the resulting number would be prime, since 2 is prime.

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