Q: What are the prime factors of the number 15,619,296?

 A: 2, 3, 7, 11, 2113

Why are those the prime factors of the number 15,619,296?

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 15,619,296

15,619,296
Factor Arrows
27,809,648
Factor Arrows
23,904,824
Factor Arrows
21,952,412
Factor Arrows
2976,206
Factor Arrows
2488,103
Factor Arrows
3162,701
Factor Arrows
723,243
Factor Arrows
112,113

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, 2113

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 3 x 7 x 11 x 2,113 = 15,619,296

This can also be written as 25 x 31 x 71 x 111 x 2,1131 = 15,619,296

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


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