Q: What are the prime factors of the number 5,242,272?

 A: 2, 3, 7, 29, 269

Why are those the prime factors of the number 5,242,272?

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 5,242,272

5,242,272
Factor Arrows
22,621,136
Factor Arrows
21,310,568
Factor Arrows
2655,284
Factor Arrows
2327,642
Factor Arrows
2163,821
Factor Arrows
354,607
Factor Arrows
77,801
Factor Arrows
29269

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, 7, 29, 269

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 7 x 29 x 269 = 5,242,272

This can also be written as 25 x 31 x 71 x 291 x 2691 = 5,242,272

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


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