Q: What are the prime factors of the number 581,830,420?

 A: 2, 5, 43, 421, 1607

Why are those the prime factors of the number 581,830,420?

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 581,830,420

581,830,420
Factor Arrows
2290,915,210
Factor Arrows
2145,457,605
Factor Arrows
529,091,521
Factor Arrows
43676,547
Factor Arrows
4211,607

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, 43, 421, 1607

We can check our work by multiplying all of the prime factors together: 2 x 2 x 5 x 43 x 421 x 1,607 = 581,830,420

This can also be written as 22 x 51 x 431 x 4211 x 1,6071 = 581,830,420

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


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