Q: What are the prime factors of the number 709,808?

 A: 2, 11, 37, 109

Why are those the prime factors of the number 709,808?

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 709,808

709,808
Factor Arrows
2354,904
Factor Arrows
2177,452
Factor Arrows
288,726
Factor Arrows
244,363
Factor Arrows
114,033
Factor Arrows
37109

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, 11, 37, 109

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 11 x 37 x 109 = 709,808

This can also be written as 24 x 111 x 371 x 1091 = 709,808

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


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