Q: What are the prime factors of the number 5,617,248?

 A: 2, 3, 7, 13, 643

Why are those the prime factors of the number 5,617,248?

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 5,617,248

5,617,248
Factor Arrows
22,808,624
Factor Arrows
21,404,312
Factor Arrows
2702,156
Factor Arrows
2351,078
Factor Arrows
2175,539
Factor Arrows
358,513
Factor Arrows
78,359
Factor Arrows
13643

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, 13, 643

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 13 x 643 = 5,617,248

This can also be written as 25 x 31 x 71 x 131 x 6431 = 5,617,248

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


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