Q:

# What is the prime factorization of 70?

A:

The prime factorization of 70 is 2 times 5 times 7. Multiplying these three prime numbers together makes 70, and this is the only unique combination of prime numbers that equals 70.

## Keep Learning

Credit: Andy McGuire CC-BY 2.0

A prime number is a positive integer that only has two positive factors: the number itself and the number one. By contrast, a composite number is a positive integer with at least one other factor besides the number itself and the number one.

A common method for finding the prime factorization of a number is to use a factor tree. It works by continuously branching the factors of composite numbers until only prime numbers are left.

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