Q: What are the prime factors of the number 253,721,240?

 A: 2, 5, 59, 107509

Why are those the prime factors of the number 253,721,240?

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 253,721,240

253,721,240
Factor Arrows
2126,860,620
Factor Arrows
263,430,310
Factor Arrows
231,715,155
Factor Arrows
56,343,031
Factor Arrows
59107,509

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, 59, 107509

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 5 x 59 x 107,509 = 253,721,240

This can also be written as 23 x 51 x 591 x 107,5091 = 253,721,240

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


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