Q: What are the prime factors of the number 915,936?

 A: 2, 3, 7, 29, 47

Why are those the prime factors of the number 915,936?

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 915,936

915,936
Factor Arrows
2457,968
Factor Arrows
2228,984
Factor Arrows
2114,492
Factor Arrows
257,246
Factor Arrows
228,623
Factor Arrows
39,541
Factor Arrows
71,363
Factor Arrows
2947

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, 7, 29, 47

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 3 x 7 x 29 x 47 = 915,936

This can also be written as 25 x 31 x 71 x 291 x 471 = 915,936

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


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