Q: What are the prime factors of the number 40,242,900?

 A: 2, 3, 5, 53, 2531

Why are those the prime factors of the number 40,242,900?

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 40,242,900

40,242,900
Factor Arrows
220,121,450
Factor Arrows
210,060,725
Factor Arrows
33,353,575
Factor Arrows
5670,715
Factor Arrows
5134,143
Factor Arrows
532,531

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, 53, 2531

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 5 x 5 x 53 x 2,531 = 40,242,900

This can also be written as 22 x 31 x 52 x 531 x 2,5311 = 40,242,900

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


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