Q: What are the prime factors of the number 72,055,060?

 A: 2, 5, 7, 11, 71, 659

Why are those the prime factors of the number 72,055,060?

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 72,055,060

72,055,060
Factor Arrows
236,027,530
Factor Arrows
218,013,765
Factor Arrows
53,602,753
Factor Arrows
7514,679
Factor Arrows
1146,789
Factor Arrows
71659

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, 11, 71, 659

We can check our work by multiplying all of the prime factors together: 2 x 2 x 5 x 7 x 11 x 71 x 659 = 72,055,060

This can also be written as 22 x 51 x 71 x 111 x 711 x 6591 = 72,055,060

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


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