Q: What are the prime factors of the number 15,734,628?

 A: 2, 3, 7, 13, 1601

Why are those the prime factors of the number 15,734,628?

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 15,734,628

15,734,628
Factor Arrows
27,867,314
Factor Arrows
23,933,657
Factor Arrows
31,311,219
Factor Arrows
3437,073
Factor Arrows
3145,691
Factor Arrows
720,813
Factor Arrows
131,601

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, 13, 1601

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 3 x 7 x 13 x 1,601 = 15,734,628

This can also be written as 22 x 33 x 71 x 131 x 1,6011 = 15,734,628

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


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