Q: What are the prime factors of the number 136,413,746?

 A: 2, 7, 17, 37, 2213

Why are those the prime factors of the number 136,413,746?

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 136,413,746

136,413,746
Factor Arrows
268,206,873
Factor Arrows
79,743,839
Factor Arrows
71,391,977
Factor Arrows
1781,881
Factor Arrows
372,213

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, 37, 2213

We can check our work by multiplying all of the prime factors together: 2 x 7 x 7 x 17 x 37 x 2,213 = 136,413,746

This can also be written as 21 x 72 x 171 x 371 x 2,2131 = 136,413,746

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


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