Q: What are the prime factors of the number 312,210,318?

 A: 2, 3, 7, 19, 151, 2591

Why are those the prime factors of the number 312,210,318?

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 312,210,318

312,210,318
Factor Arrows
2156,105,159
Factor Arrows
352,035,053
Factor Arrows
77,433,579
Factor Arrows
19391,241
Factor Arrows
1512,591

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, 7, 19, 151, 2591

We can check our work by multiplying all of the prime factors together: 2 x 3 x 7 x 19 x 151 x 2,591 = 312,210,318

This can also be written as 21 x 31 x 71 x 191 x 1511 x 2,5911 = 312,210,318

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


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