Q: What are the prime factors of the number 12,887,392?

 A: 2, 7, 8219

Why are those the prime factors of the number 12,887,392?

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 12,887,392

12,887,392
Factor Arrows
26,443,696
Factor Arrows
23,221,848
Factor Arrows
21,610,924
Factor Arrows
2805,462
Factor Arrows
2402,731
Factor Arrows
757,533
Factor Arrows
78,219

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, 8219

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 7 x 7 x 8,219 = 12,887,392

This can also be written as 25 x 72 x 8,2191 = 12,887,392

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


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