Q: What are the prime factors of the number 2,890,688?

 A: 2, 31, 47

Why are those the prime factors of the number 2,890,688?

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 2,890,688

2,890,688
Factor Arrows
21,445,344
Factor Arrows
2722,672
Factor Arrows
2361,336
Factor Arrows
2180,668
Factor Arrows
290,334
Factor Arrows
245,167
Factor Arrows
311,457
Factor Arrows
3147

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, 31, 47

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 31 x 31 x 47 = 2,890,688

This can also be written as 26 x 312 x 471 = 2,890,688

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


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