Q: What are the prime factors of the number 617,960?

 A: 2, 5, 7, 2207

Why are those the prime factors of the number 617,960?

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 617,960

617,960
Factor Arrows
2308,980
Factor Arrows
2154,490
Factor Arrows
277,245
Factor Arrows
515,449
Factor Arrows
72,207

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, 5, 7, 2207

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 5 x 7 x 2,207 = 617,960

This can also be written as 23 x 51 x 71 x 2,2071 = 617,960

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


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