Q: What are the prime factors of the number 656,080?

 A: 2, 5, 59, 139

Why are those the prime factors of the number 656,080?

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 656,080

656,080
Factor Arrows
2328,040
Factor Arrows
2164,020
Factor Arrows
282,010
Factor Arrows
241,005
Factor Arrows
58,201
Factor Arrows
59139

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, 59, 139

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 5 x 59 x 139 = 656,080

This can also be written as 24 x 51 x 591 x 1391 = 656,080

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


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