Q: What are the prime factors of the number 17,665,776?

 A: 2, 3, 43, 317

Why are those the prime factors of the number 17,665,776?

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 17,665,776

17,665,776
Factor Arrows
28,832,888
Factor Arrows
24,416,444
Factor Arrows
22,208,222
Factor Arrows
21,104,111
Factor Arrows
3368,037
Factor Arrows
3122,679
Factor Arrows
340,893
Factor Arrows
313,631
Factor Arrows
43317

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, 43, 317

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 3 x 3 x 3 x 43 x 317 = 17,665,776

This can also be written as 24 x 34 x 431 x 3171 = 17,665,776

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


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