Q: What are the prime factors of the number 2,312,240?

 A: 2, 5, 7, 4129

Why are those the prime factors of the number 2,312,240?

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 2,312,240

2,312,240
Factor Arrows
21,156,120
Factor Arrows
2578,060
Factor Arrows
2289,030
Factor Arrows
2144,515
Factor Arrows
528,903
Factor Arrows
74,129

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, 7, 4129

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 5 x 7 x 4,129 = 2,312,240

This can also be written as 24 x 51 x 71 x 4,1291 = 2,312,240

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


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