Q: What are the prime factors of the number 2,635,520?

 A: 2, 5, 29, 71

Why are those the prime factors of the number 2,635,520?

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 2,635,520

2,635,520
Factor Arrows
21,317,760
Factor Arrows
2658,880
Factor Arrows
2329,440
Factor Arrows
2164,720
Factor Arrows
282,360
Factor Arrows
241,180
Factor Arrows
220,590
Factor Arrows
210,295
Factor Arrows
52,059
Factor Arrows
2971

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, 29, 71

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 2 x 2 x 5 x 29 x 71 = 2,635,520

This can also be written as 28 x 51 x 291 x 711 = 2,635,520

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


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