Q: What are the prime factors of the number 2,413,040?

 A: 2, 5, 7, 31, 139

Why are those the prime factors of the number 2,413,040?

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 2,413,040

2,413,040
Factor Arrows
21,206,520
Factor Arrows
2603,260
Factor Arrows
2301,630
Factor Arrows
2150,815
Factor Arrows
530,163
Factor Arrows
74,309
Factor Arrows
31139

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, 5, 7, 31, 139

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 5 x 7 x 31 x 139 = 2,413,040

This can also be written as 24 x 51 x 71 x 311 x 1391 = 2,413,040

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


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