Q: What are the prime factors of the number 306,212,340?

 A: 2, 3, 5, 7, 23, 31699

Why are those the prime factors of the number 306,212,340?

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 306,212,340

306,212,340
Factor Arrows
2153,106,170
Factor Arrows
276,553,085
Factor Arrows
325,517,695
Factor Arrows
55,103,539
Factor Arrows
7729,077
Factor Arrows
2331,699

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, 23, 31699

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 5 x 7 x 23 x 31,699 = 306,212,340

This can also be written as 22 x 31 x 51 x 71 x 231 x 31,6991 = 306,212,340

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


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