Q: What are the prime factors of the number 254,155,120?

 A: 2, 5, 67, 47417

Why are those the prime factors of the number 254,155,120?

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 254,155,120

254,155,120
Factor Arrows
2127,077,560
Factor Arrows
263,538,780
Factor Arrows
231,769,390
Factor Arrows
215,884,695
Factor Arrows
53,176,939
Factor Arrows
6747,417

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, 67, 47417

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 5 x 67 x 47,417 = 254,155,120

This can also be written as 24 x 51 x 671 x 47,4171 = 254,155,120

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


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