Q: What are the prime factors of the number 2,457,792?

 A: 2, 3, 17, 251

Why are those the prime factors of the number 2,457,792?

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 2,457,792

2,457,792
Factor Arrows
21,228,896
Factor Arrows
2614,448
Factor Arrows
2307,224
Factor Arrows
2153,612
Factor Arrows
276,806
Factor Arrows
238,403
Factor Arrows
312,801
Factor Arrows
34,267
Factor Arrows
17251

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, 17, 251

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 3 x 3 x 17 x 251 = 2,457,792

This can also be written as 26 x 32 x 171 x 2511 = 2,457,792

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


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