Q: What are the prime factors of the number 160,765,770?

 A: 2, 3, 5, 11, 17, 28657

Why are those the prime factors of the number 160,765,770?

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 160,765,770

160,765,770
Factor Arrows
280,382,885
Factor Arrows
326,794,295
Factor Arrows
55,358,859
Factor Arrows
11487,169
Factor Arrows
1728,657

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, 11, 17, 28657

We can check our work by multiplying all of the prime factors together: 2 x 3 x 5 x 11 x 17 x 28,657 = 160,765,770

This can also be written as 21 x 31 x 51 x 111 x 171 x 28,6571 = 160,765,770

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


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