Q: What are the prime factors of the number 2,468,640?

 A: 2, 3, 5, 37, 139

Why are those the prime factors of the number 2,468,640?

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 2,468,640

2,468,640
Factor Arrows
21,234,320
Factor Arrows
2617,160
Factor Arrows
2308,580
Factor Arrows
2154,290
Factor Arrows
277,145
Factor Arrows
325,715
Factor Arrows
55,143
Factor Arrows
37139

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, 5, 37, 139

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 3 x 5 x 37 x 139 = 2,468,640

This can also be written as 25 x 31 x 51 x 371 x 1391 = 2,468,640

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


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