Q: What are the prime factors of the number 3,620,160?

 A: 2, 3, 5, 419

Why are those the prime factors of the number 3,620,160?

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 3,620,160

3,620,160
Factor Arrows
21,810,080
Factor Arrows
2905,040
Factor Arrows
2452,520
Factor Arrows
2226,260
Factor Arrows
2113,130
Factor Arrows
256,565
Factor Arrows
318,855
Factor Arrows
36,285
Factor Arrows
32,095
Factor Arrows
5419

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, 419

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 3 x 3 x 3 x 5 x 419 = 3,620,160

This can also be written as 26 x 33 x 51 x 4191 = 3,620,160

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


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