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# What prime numbers are even?

Question #86034. Asked by star_gazer. (Sep 18 07 3:13 PM)

ak2

The number 2 is the only even prime number.

http://en.wikipedia.org/wiki/2_%28number%29#In_mathematics

 Sep 18 07, 3:28 PM
jonnowales

Here is an aritcle which focuses on prime numbers, indicating that 2 is the only prime number out of the "infinitude" of prime numbers.

http://en.wikipedia.org/wiki/Prime_numbers

 Sep 18 07, 3:33 PM
Baloo55th

The only even prime number can be 2 because any even number other than 2 can be divided by 2. That's more or less from the definition of an even number. An even number is one that can be divided by two leaving no remainder. A prime number can only be divided by itself or 1, which definition two fits but no other even number does. And won't - no matter how far they go.

 Sep 19 07, 4:42 PM

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