Q: What are the prime factors of the number 2,931,912?

 A: 2, 3, 43, 947

Why are those the prime factors of the number 2,931,912?

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 2,931,912

2,931,912
Factor Arrows
21,465,956
Factor Arrows
2732,978
Factor Arrows
2366,489
Factor Arrows
3122,163
Factor Arrows
340,721
Factor Arrows
43947

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, 43, 947

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 3 x 43 x 947 = 2,931,912

This can also be written as 23 x 32 x 431 x 9471 = 2,931,912

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


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