Q: What are the prime factors of the number 29,454,656?

 A: 2, 7, 11, 43, 139

Why are those the prime factors of the number 29,454,656?

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 29,454,656

29,454,656
Factor Arrows
214,727,328
Factor Arrows
27,363,664
Factor Arrows
23,681,832
Factor Arrows
21,840,916
Factor Arrows
2920,458
Factor Arrows
2460,229
Factor Arrows
765,747
Factor Arrows
115,977
Factor Arrows
43139

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, 7, 11, 43, 139

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 7 x 11 x 43 x 139 = 29,454,656

This can also be written as 26 x 71 x 111 x 431 x 1391 = 29,454,656

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


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