A prime number is any integer that can only be divided by itself and 1. The number 1, however, is not a prime number.
There are 25 prime numbers between 1 and 100. As it relates to the GMAT, it is recommended that you at least memorize the prime numbers up to 29.
2Â Â 3 Â 5 Â 7Â Â 11
13Â Â 17 Â 19 Â 23 Â 29
31Â Â 37 Â 41 Â 43 Â 47
53Â Â 59 Â 61 Â 67 Â 71
73Â Â 79 Â 83 Â 89 Â 97
Great.  I can totally see how relevant prime numbers will be, when I’m running through a P&L, devising a channel marketing strategy, or managing an SAP implementation. </sarcasm>
-.- ITS WAY HARD WHT DA HECK -.-
I have to memorize all of that by friday!
ITS EASY for a 7th grader