Q: What are the prime factors of the number 15,240,064?

 A: 2, 7, 73, 233

Why are those the prime factors of the number 15,240,064?

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 15,240,064

15,240,064
Factor Arrows
27,620,032
Factor Arrows
23,810,016
Factor Arrows
21,905,008
Factor Arrows
2952,504
Factor Arrows
2476,252
Factor Arrows
2238,126
Factor Arrows
2119,063
Factor Arrows
717,009
Factor Arrows
73233

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, 73, 233

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 2 x 7 x 73 x 233 = 15,240,064

This can also be written as 27 x 71 x 731 x 2331 = 15,240,064

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


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