Q: What are the prime factors of the number 163,235,120?

 A: 2, 5, 37, 55147

Why are those the prime factors of the number 163,235,120?

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 163,235,120

163,235,120
Factor Arrows
281,617,560
Factor Arrows
240,808,780
Factor Arrows
220,404,390
Factor Arrows
210,202,195
Factor Arrows
52,040,439
Factor Arrows
3755,147

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, 37, 55147

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 5 x 37 x 55,147 = 163,235,120

This can also be written as 24 x 51 x 371 x 55,1471 = 163,235,120

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


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