Q: What are the prime factors of the number 708,505,070?

 A: 2, 5, 7, 13, 103, 7559

Why are those the prime factors of the number 708,505,070?

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 708,505,070

708,505,070
Factor Arrows
2354,252,535
Factor Arrows
570,850,507
Factor Arrows
710,121,501
Factor Arrows
13778,577
Factor Arrows
1037,559

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, 13, 103, 7559

We can check our work by multiplying all of the prime factors together: 2 x 5 x 7 x 13 x 103 x 7,559 = 708,505,070

This can also be written as 21 x 51 x 71 x 131 x 1031 x 7,5591 = 708,505,070

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


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