Prime and Composite!!!
Prime number is a whole number greater tan 1 that has exactly two factors, itself and 1. 1,2,3,7,11,13,17,19, are a few prime numbers
Composite numbers are numbers that has more than two factors.Here are some composite numbers:4,8,10,12,15,20,21,28,36,42,48,56,63,64,72,81,86,96,100,110,120,143 are some composite numbers.
A rainbow is how to find the products of numbers.