Q: What are the prime factors of the number 315,242,700?

 A: 2, 3, 5, 151, 6959

Why are those the prime factors of the number 315,242,700?

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 315,242,700

315,242,700
Factor Arrows
2157,621,350
Factor Arrows
278,810,675
Factor Arrows
326,270,225
Factor Arrows
55,254,045
Factor Arrows
51,050,809
Factor Arrows
1516,959

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, 151, 6959

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 5 x 5 x 151 x 6,959 = 315,242,700

This can also be written as 22 x 31 x 52 x 1511 x 6,9591 = 315,242,700

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


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