Q: What are the prime factors of the number 658,784?

 A: 2, 7, 17, 173

Why are those the prime factors of the number 658,784?

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 658,784

658,784
Factor Arrows
2329,392
Factor Arrows
2164,696
Factor Arrows
282,348
Factor Arrows
241,174
Factor Arrows
220,587
Factor Arrows
72,941
Factor Arrows
17173

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, 17, 173

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 7 x 17 x 173 = 658,784

This can also be written as 25 x 71 x 171 x 1731 = 658,784

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


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