Q: What are the prime factors of the number 70,260,372?

 A: 2, 3, 7, 13, 2383

Why are those the prime factors of the number 70,260,372?

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 70,260,372

70,260,372
Factor Arrows
235,130,186
Factor Arrows
217,565,093
Factor Arrows
35,855,031
Factor Arrows
31,951,677
Factor Arrows
3650,559
Factor Arrows
3216,853
Factor Arrows
730,979
Factor Arrows
132,383

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, 3, 7, 13, 2383

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 3 x 3 x 7 x 13 x 2,383 = 70,260,372

This can also be written as 22 x 34 x 71 x 131 x 2,3831 = 70,260,372

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


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