Q: What are the prime factors of the number 312,756,150?

 A: 2, 3, 5, 7, 19, 61, 257

Why are those the prime factors of the number 312,756,150?

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 312,756,150

312,756,150
Factor Arrows
2156,378,075
Factor Arrows
352,126,025
Factor Arrows
510,425,205
Factor Arrows
52,085,041
Factor Arrows
7297,863
Factor Arrows
1915,677
Factor Arrows
61257

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, 19, 61, 257

We can check our work by multiplying all of the prime factors together: 2 x 3 x 5 x 5 x 7 x 19 x 61 x 257 = 312,756,150

This can also be written as 21 x 31 x 52 x 71 x 191 x 611 x 2571 = 312,756,150

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


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