Q: What are the prime factors of the number 325,163,853?

 A: 3, 7, 19, 151, 257

Why are those the prime factors of the number 325,163,853?

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 325,163,853

325,163,853
Factor Arrows
3108,387,951
Factor Arrows
336,129,317
Factor Arrows
75,161,331
Factor Arrows
7737,333
Factor Arrows
1938,807
Factor Arrows
151257

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:

3, 7, 19, 151, 257

We can check our work by multiplying all of the prime factors together: 3 x 3 x 7 x 7 x 19 x 151 x 257 = 325,163,853

This can also be written as 32 x 72 x 191 x 1511 x 2571 = 325,163,853

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


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