Q: What are the prime factors of the number 3,984,876?

 A: 2, 3, 7, 251

Why are those the prime factors of the number 3,984,876?

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 3,984,876

3,984,876
Factor Arrows
21,992,438
Factor Arrows
2996,219
Factor Arrows
3332,073
Factor Arrows
3110,691
Factor Arrows
336,897
Factor Arrows
312,299
Factor Arrows
71,757
Factor Arrows
7251

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, 251

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 3 x 3 x 7 x 7 x 251 = 3,984,876

This can also be written as 22 x 34 x 72 x 2511 = 3,984,876

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


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