220 = 2 x 2 x 5 x 11
It is: 2*2*5*11 = 220
Prime numbers don't factorize; they're already prime.
No, 220 is not a prime number.
220 is a composite number, as are all whole numbers ending in zero.
break it into prime number multiples,10 = 2 * 5 (both prime numbers)example: factorize 387(387) = 9 * 43 (both primes , end of excercise)factorize 390:(390) = 2 * (195) = 3 * (65) = 5 * 13 (both primes , end of excercise)
If you play the factor game, you factorize the number. If the number of factors are only 2 including 1 and number itself, then it is a prime.
220 is not a prime number because it is divisible by a number other than itself and the number 1. No even number other than 2 is a prime because they can all be divided by 2.
211 is the only prime number between 200 and 220
3 times 5
Only 43 and 107 are prime numbers
The prime factorization of 220 is 2x2x5x11.
It's more efficient. You want to end up with all prime numbers. You could divide by a composite number, but you'd just have to break that number down later. It saves steps.
2x2x2x2x3x3x11 =) Go to (http://www.purplemath.com/modules/factnumb.htm) to learn how to factorize