Q: What are the prime factors of the number 124,322,156?

 A: 2, 7, 17, 139, 1879

Why are those the prime factors of the number 124,322,156?

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 124,322,156

124,322,156
Factor Arrows
262,161,078
Factor Arrows
231,080,539
Factor Arrows
74,440,077
Factor Arrows
17261,181
Factor Arrows
1391,879

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, 139, 1879

We can check our work by multiplying all of the prime factors together: 2 x 2 x 7 x 17 x 139 x 1,879 = 124,322,156

This can also be written as 22 x 71 x 171 x 1391 x 1,8791 = 124,322,156

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


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