Q: What are the prime factors of the number 70,081,158?

 A: 2, 3, 7, 19, 53, 1657

Why are those the prime factors of the number 70,081,158?

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 70,081,158

70,081,158
Factor Arrows
235,040,579
Factor Arrows
311,680,193
Factor Arrows
71,668,599
Factor Arrows
1987,821
Factor Arrows
531,657

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, 19, 53, 1657

We can check our work by multiplying all of the prime factors together: 2 x 3 x 7 x 19 x 53 x 1,657 = 70,081,158

This can also be written as 21 x 31 x 71 x 191 x 531 x 1,6571 = 70,081,158

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


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