Q: What are the prime factors of the number 13,858,152?

 A: 2, 3, 7, 11, 7499

Why are those the prime factors of the number 13,858,152?

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 13,858,152

13,858,152
Factor Arrows
26,929,076
Factor Arrows
23,464,538
Factor Arrows
21,732,269
Factor Arrows
3577,423
Factor Arrows
782,489
Factor Arrows
117,499

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, 11, 7499

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 7 x 11 x 7,499 = 13,858,152

This can also be written as 23 x 31 x 71 x 111 x 7,4991 = 13,858,152

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


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