Math is Fun This site provides a prime number chart 1-1000, a prime number calculator, and easy to follow instructions.
SOS Math This site provides a nice printable prime number chart, and tells you what number each prime number is. For example, the prime number 1297 is the 211th prime number.
Prime and Composite Numbers Video
Fact Monster: This site has a prime number list to 1000, but what makes this site helpful is the information and facts given about prime numbers.
MooMooMath: This page has a prime number chart to 1000, a video explaining prime and composite numbers, and a prime number calculator.
Prime Number Calculator: This is a simple and straight to the point calculator. Enter any number and it will tell you if it is prime or not. Simple,easy,time saving calculator.