Q: What are the prime factors of the number 4,241,328?

 A: 2, 3, 7, 13, 971

Why are those the prime factors of the number 4,241,328?

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 4,241,328

4,241,328
Factor Arrows
22,120,664
Factor Arrows
21,060,332
Factor Arrows
2530,166
Factor Arrows
2265,083
Factor Arrows
388,361
Factor Arrows
712,623
Factor Arrows
13971

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, 13, 971

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 7 x 13 x 971 = 4,241,328

This can also be written as 24 x 31 x 71 x 131 x 9711 = 4,241,328

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


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