Q: What are the prime factors of the number 312,143,616?

 A: 2, 3, 135479

Why are those the prime factors of the number 312,143,616?

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 312,143,616

312,143,616
Factor Arrows
2156,071,808
Factor Arrows
278,035,904
Factor Arrows
239,017,952
Factor Arrows
219,508,976
Factor Arrows
29,754,488
Factor Arrows
24,877,244
Factor Arrows
22,438,622
Factor Arrows
21,219,311
Factor Arrows
3406,437
Factor Arrows
3135,479

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, 135479

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 2 x 2 x 3 x 3 x 135,479 = 312,143,616

This can also be written as 28 x 32 x 135,4791 = 312,143,616

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


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