Q: What are the prime factors of the number 632,320?

 A: 2, 5, 13, 19

Why are those the prime factors of the number 632,320?

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 632,320

632,320
Factor Arrows
2316,160
Factor Arrows
2158,080
Factor Arrows
279,040
Factor Arrows
239,520
Factor Arrows
219,760
Factor Arrows
29,880
Factor Arrows
24,940
Factor Arrows
22,470
Factor Arrows
21,235
Factor Arrows
5247
Factor Arrows
1319

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, 13, 19

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 2 x 5 x 13 x 19 = 632,320

This can also be written as 29 x 51 x 131 x 191 = 632,320

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


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