Question

Fine a prime factor of the number 100

Answer 1

2 and 5

Explanation:

Make a list of all of the factors of 100.

• 1, 100
• 2, 50
• 4, 25
• 5, 20
• 10, 10

A prime number has two factors, one and itself, so the prime numbers in this list are 2 and 5. 1 is not prime because it only has one factor, itself.

Answer 2

The prime factorization of 100 is 2 * 2 * 5 * 5. Using exponents, this number can also be written as 2^2 * 5^2.