Q: What are the prime factors of the number 312,112,320?

 A: 2, 3, 5, 13, 89, 281

Why are those the prime factors of the number 312,112,320?

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 312,112,320

312,112,320
Factor Arrows
2156,056,160
Factor Arrows
278,028,080
Factor Arrows
239,014,040
Factor Arrows
219,507,020
Factor Arrows
29,753,510
Factor Arrows
24,876,755
Factor Arrows
31,625,585
Factor Arrows
5325,117
Factor Arrows
1325,009
Factor Arrows
89281

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, 13, 89, 281

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 3 x 5 x 13 x 89 x 281 = 312,112,320

This can also be written as 26 x 31 x 51 x 131 x 891 x 2811 = 312,112,320

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


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