Q: What are the prime factors of the number 312,131,210?

 A: 2, 5, 73, 137, 3121

Why are those the prime factors of the number 312,131,210?

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 312,131,210

312,131,210
Factor Arrows
2156,065,605
Factor Arrows
531,213,121
Factor Arrows
73427,577
Factor Arrows
1373,121

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, 73, 137, 3121

We can check our work by multiplying all of the prime factors together: 2 x 5 x 73 x 137 x 3,121 = 312,131,210

This can also be written as 21 x 51 x 731 x 1371 x 3,1211 = 312,131,210

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


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