Q: What are the prime factors of the number 12,574,458?

 A: 2, 3, 13, 17, 29, 109

Why are those the prime factors of the number 12,574,458?

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 12,574,458

12,574,458
Factor Arrows
26,287,229
Factor Arrows
32,095,743
Factor Arrows
3698,581
Factor Arrows
1353,737
Factor Arrows
173,161
Factor Arrows
29109

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, 13, 17, 29, 109

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 13 x 17 x 29 x 109 = 12,574,458

This can also be written as 21 x 32 x 131 x 171 x 291 x 1091 = 12,574,458

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


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