Q: What are the prime factors of the number 210,540,260?

 A: 2, 5, 7, 47, 653

Why are those the prime factors of the number 210,540,260?

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 210,540,260

210,540,260
Factor Arrows
2105,270,130
Factor Arrows
252,635,065
Factor Arrows
510,527,013
Factor Arrows
71,503,859
Factor Arrows
7214,837
Factor Arrows
730,691
Factor Arrows
47653

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, 7, 47, 653

We can check our work by multiplying all of the prime factors together: 2 x 2 x 5 x 7 x 7 x 7 x 47 x 653 = 210,540,260

This can also be written as 22 x 51 x 73 x 471 x 6531 = 210,540,260

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


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