Q: What are the prime factors of the number 357,960?

 A: 2, 3, 5, 19, 157

Why are those the prime factors of the number 357,960?

Prime factors are the prime numbers that can be multipled together to equal the original number. You find the factors by dividing by prime numbers. It is best shown by creating a Factor Tree.

Factor Tree for the number 357,960

357,960
Factor Arrows
2178,980
Factor Arrows
289,490
Factor Arrows
244,745
Factor Arrows
314,915
Factor Arrows
52,983
Factor Arrows
19157

The numbers in bold above are the prime factors. If there are multiples, you only count them one time. This leads us to our prime factors of:

2, 3, 5, 19, 157

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 5 x 19 x 157 = 357,960

This can also be written as 23 x 31 x 51 x 191 x 1571 = 357,960

If you would like to know more, or need additional explanation, please review our prime factorization explanation.


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