Q: What are the prime factors of the number 70,901,530?

 A: 2, 5, 7, 2953

Why are those the prime factors of the number 70,901,530?

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 70,901,530

70,901,530
Factor Arrows
235,450,765
Factor Arrows
57,090,153
Factor Arrows
71,012,879
Factor Arrows
7144,697
Factor Arrows
720,671
Factor Arrows
72,953

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, 2953

We can check our work by multiplying all of the prime factors together: 2 x 5 x 7 x 7 x 7 x 7 x 2,953 = 70,901,530

This can also be written as 21 x 51 x 74 x 2,9531 = 70,901,530

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


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