Q: What are the prime factors of the number 57,109,248?

 A: 2, 3, 7, 3541

Why are those the prime factors of the number 57,109,248?

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 57,109,248

57,109,248
Factor Arrows
228,554,624
Factor Arrows
214,277,312
Factor Arrows
27,138,656
Factor Arrows
23,569,328
Factor Arrows
21,784,664
Factor Arrows
2892,332
Factor Arrows
2446,166
Factor Arrows
2223,083
Factor Arrows
374,361
Factor Arrows
324,787
Factor Arrows
73,541

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, 3541

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 3 x 3 x 7 x 3,541 = 57,109,248

This can also be written as 28 x 32 x 71 x 3,5411 = 57,109,248

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


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