Q: What are the prime factors of the number 160,455,456?

 A: 2, 3, 7, 19, 59, 71

Why are those the prime factors of the number 160,455,456?

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 160,455,456

160,455,456
Factor Arrows
280,227,728
Factor Arrows
240,113,864
Factor Arrows
220,056,932
Factor Arrows
210,028,466
Factor Arrows
25,014,233
Factor Arrows
31,671,411
Factor Arrows
3557,137
Factor Arrows
779,591
Factor Arrows
194,189
Factor Arrows
5971

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, 7, 19, 59, 71

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 3 x 7 x 19 x 59 x 71 = 160,455,456

This can also be written as 25 x 32 x 71 x 191 x 591 x 711 = 160,455,456

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


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