Q: What are the prime factors of the number 16,906,638?

 A: 2, 3, 7, 61, 6599

Why are those the prime factors of the number 16,906,638?

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 16,906,638

16,906,638
Factor Arrows
28,453,319
Factor Arrows
32,817,773
Factor Arrows
7402,539
Factor Arrows
616,599

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, 61, 6599

We can check our work by multiplying all of the prime factors together: 2 x 3 x 7 x 61 x 6,599 = 16,906,638

This can also be written as 21 x 31 x 71 x 611 x 6,5991 = 16,906,638

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


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