Q: What are the prime factors of the number 302,720,670?

 A: 2, 3, 5, 7, 480509

Why are those the prime factors of the number 302,720,670?

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 302,720,670

302,720,670
Factor Arrows
2151,360,335
Factor Arrows
350,453,445
Factor Arrows
316,817,815
Factor Arrows
53,363,563
Factor Arrows
7480,509

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, 7, 480509

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 5 x 7 x 480,509 = 302,720,670

This can also be written as 21 x 32 x 51 x 71 x 480,5091 = 302,720,670

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


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