Q: What are the prime factors of the number 7,855,575?

 A: 3, 5, 7, 13, 1151

Why are those the prime factors of the number 7,855,575?

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 7,855,575

7,855,575
Factor Arrows
32,618,525
Factor Arrows
5523,705
Factor Arrows
5104,741
Factor Arrows
714,963
Factor Arrows
131,151

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:

3, 5, 7, 13, 1151

We can check our work by multiplying all of the prime factors together: 3 x 5 x 5 x 7 x 13 x 1,151 = 7,855,575

This can also be written as 31 x 52 x 71 x 131 x 1,1511 = 7,855,575

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


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