Q: What are the prime factors of the number 70,373,370?

 A: 2, 3, 5, 17, 43, 3209

Why are those the prime factors of the number 70,373,370?

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 70,373,370

70,373,370
Factor Arrows
235,186,685
Factor Arrows
311,728,895
Factor Arrows
52,345,779
Factor Arrows
17137,987
Factor Arrows
433,209

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, 5, 17, 43, 3209

We can check our work by multiplying all of the prime factors together: 2 x 3 x 5 x 17 x 43 x 3,209 = 70,373,370

This can also be written as 21 x 31 x 51 x 171 x 431 x 3,2091 = 70,373,370

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


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