Q: What are the prime factors of the number 139,728,848?

 A: 2, 7, 17, 73387

Why are those the prime factors of the number 139,728,848?

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 139,728,848

139,728,848
Factor Arrows
269,864,424
Factor Arrows
234,932,212
Factor Arrows
217,466,106
Factor Arrows
28,733,053
Factor Arrows
71,247,579
Factor Arrows
1773,387

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, 17, 73387

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 7 x 17 x 73,387 = 139,728,848

This can also be written as 24 x 71 x 171 x 73,3871 = 139,728,848

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


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