Q: What are the prime factors of the number 124,251,400?

 A: 2, 5, 7, 13, 6827

Why are those the prime factors of the number 124,251,400?

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 124,251,400

124,251,400
Factor Arrows
262,125,700
Factor Arrows
231,062,850
Factor Arrows
215,531,425
Factor Arrows
53,106,285
Factor Arrows
5621,257
Factor Arrows
788,751
Factor Arrows
136,827

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, 5, 7, 13, 6827

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 5 x 5 x 7 x 13 x 6,827 = 124,251,400

This can also be written as 23 x 52 x 71 x 131 x 6,8271 = 124,251,400

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


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