Q: What are the prime factors of the number 1,708,160?

 A: 2, 5, 17, 157

Why are those the prime factors of the number 1,708,160?

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 1,708,160

1,708,160
Factor Arrows
2854,080
Factor Arrows
2427,040
Factor Arrows
2213,520
Factor Arrows
2106,760
Factor Arrows
253,380
Factor Arrows
226,690
Factor Arrows
213,345
Factor Arrows
52,669
Factor Arrows
17157

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, 17, 157

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 2 x 5 x 17 x 157 = 1,708,160

This can also be written as 27 x 51 x 171 x 1571 = 1,708,160

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


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