Q: What are the prime factors of the number 312,134,240?

 A: 2, 5, 11, 67, 2647

Why are those the prime factors of the number 312,134,240?

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 312,134,240

312,134,240
Factor Arrows
2156,067,120
Factor Arrows
278,033,560
Factor Arrows
239,016,780
Factor Arrows
219,508,390
Factor Arrows
29,754,195
Factor Arrows
51,950,839
Factor Arrows
11177,349
Factor Arrows
672,647

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, 11, 67, 2647

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 5 x 11 x 67 x 2,647 = 312,134,240

This can also be written as 25 x 51 x 111 x 671 x 2,6471 = 312,134,240

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


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