Is 2 Prime?
  • Agent Smith
    9.5k
    Let's first look at primes other than 2:

    (I'm going to use I as a tally mark)

    3 is II I*
    5 is II II I*
    7 is II II II I*
    .
    .
    .
    nth prime is pairs of I with one unpaired I left over [*]

    Now take a look at 2.

    2 is II [no unpaired 1 left over]

    2 breaks the pattern of primes as odd numbers.
    Agent Smith Options
  • fdrake
    6.6k
    This is just maths.

    Yes, 2 is prime. The definition of a prime number is a natural number which is only divisible by itself and one. The divisors of 2 are 2 (itself) and 1. Therefore 2 is prime.

    Going to close the thread.
    fdrake Options
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