Q: What are the prime factors of the number 137,582,550?

 A: 2, 3, 5, 7, 23, 211

Why are those the prime factors of the number 137,582,550?

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 137,582,550

137,582,550
Factor Arrows
268,791,275
Factor Arrows
322,930,425
Factor Arrows
37,643,475
Factor Arrows
32,547,825
Factor Arrows
3849,275
Factor Arrows
5169,855
Factor Arrows
533,971
Factor Arrows
74,853
Factor Arrows
23211

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, 3, 5, 7, 23, 211

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 3 x 3 x 5 x 5 x 7 x 23 x 211 = 137,582,550

This can also be written as 21 x 34 x 52 x 71 x 231 x 2111 = 137,582,550

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


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