SAT Tip — One is not a Prime Number, but Two is!

Prime numbers are defined as numbers greater than one that can be divided only by one and itself.

It is helpful to know the prime numbers under 100, which are:

2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97

http://www.factmonster.com/math/numbers/prime.html