Q: What are the prime factors of the number 17,276,672?

 A: 2, 7, 31, 311

Why are those the prime factors of the number 17,276,672?

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 17,276,672

17,276,672
Factor Arrows
28,638,336
Factor Arrows
24,319,168
Factor Arrows
22,159,584
Factor Arrows
21,079,792
Factor Arrows
2539,896
Factor Arrows
2269,948
Factor Arrows
2134,974
Factor Arrows
267,487
Factor Arrows
79,641
Factor Arrows
31311

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, 7, 31, 311

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 2 x 7 x 31 x 311 = 17,276,672

This can also be written as 28 x 71 x 311 x 3111 = 17,276,672

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


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