Q: What are the prime factors of the number 12,402,315?

 A: 3, 5, 113, 271

Why are those the prime factors of the number 12,402,315?

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 12,402,315

12,402,315
Factor Arrows
34,134,105
Factor Arrows
31,378,035
Factor Arrows
3459,345
Factor Arrows
3153,115
Factor Arrows
530,623
Factor Arrows
113271

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:

3, 5, 113, 271

We can check our work by multiplying all of the prime factors together: 3 x 3 x 3 x 3 x 5 x 113 x 271 = 12,402,315

This can also be written as 34 x 51 x 1131 x 2711 = 12,402,315

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


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