Q: What are the prime factors of the number 2,931,936?

 A: 2, 3, 7, 4363

Why are those the prime factors of the number 2,931,936?

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 2,931,936

2,931,936
Factor Arrows
21,465,968
Factor Arrows
2732,984
Factor Arrows
2366,492
Factor Arrows
2183,246
Factor Arrows
291,623
Factor Arrows
330,541
Factor Arrows
74,363

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, 4363

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 3 x 7 x 4,363 = 2,931,936

This can also be written as 25 x 31 x 71 x 4,3631 = 2,931,936

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


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