Q: What are the prime factors of the number 20,625,572?

 A: 2, 11, 23, 89, 229

Why are those the prime factors of the number 20,625,572?

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 20,625,572

20,625,572
Factor Arrows
210,312,786
Factor Arrows
25,156,393
Factor Arrows
11468,763
Factor Arrows
2320,381
Factor Arrows
89229

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, 23, 89, 229

We can check our work by multiplying all of the prime factors together: 2 x 2 x 11 x 23 x 89 x 229 = 20,625,572

This can also be written as 22 x 111 x 231 x 891 x 2291 = 20,625,572

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


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