Q: What are the prime factors of the number 5,242,560?

 A: 2, 3, 5, 43, 127

Why are those the prime factors of the number 5,242,560?

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 5,242,560

5,242,560
Factor Arrows
22,621,280
Factor Arrows
21,310,640
Factor Arrows
2655,320
Factor Arrows
2327,660
Factor Arrows
2163,830
Factor Arrows
281,915
Factor Arrows
327,305
Factor Arrows
55,461
Factor Arrows
43127

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, 43, 127

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 5 x 43 x 127 = 5,242,560

This can also be written as 26 x 31 x 51 x 431 x 1271 = 5,242,560

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


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