Q: What are the prime factors of the number 163,577,760?

 A: 2, 3, 5, 340787

Why are those the prime factors of the number 163,577,760?

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 163,577,760

163,577,760
Factor Arrows
281,788,880
Factor Arrows
240,894,440
Factor Arrows
220,447,220
Factor Arrows
210,223,610
Factor Arrows
25,111,805
Factor Arrows
31,703,935
Factor Arrows
5340,787

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, 340787

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 3 x 5 x 340,787 = 163,577,760

This can also be written as 25 x 31 x 51 x 340,7871 = 163,577,760

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


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