Q: What are the prime factors of the number 153,680?

 A: 2, 5, 17, 113

Why are those the prime factors of the number 153,680?

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 153,680

153,680
Factor Arrows
276,840
Factor Arrows
238,420
Factor Arrows
219,210
Factor Arrows
29,605
Factor Arrows
51,921
Factor Arrows
17113

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, 17, 113

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 5 x 17 x 113 = 153,680

This can also be written as 24 x 51 x 171 x 1131 = 153,680

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


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