Q: What are the prime factors of the number 72,201,682?

 A: 2, 7, 47, 197, 557

Why are those the prime factors of the number 72,201,682?

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 72,201,682

72,201,682
Factor Arrows
236,100,841
Factor Arrows
75,157,263
Factor Arrows
47109,729
Factor Arrows
197557

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, 7, 47, 197, 557

We can check our work by multiplying all of the prime factors together: 2 x 7 x 47 x 197 x 557 = 72,201,682

This can also be written as 21 x 71 x 471 x 1971 x 5571 = 72,201,682

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


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