Q: What are the prime factors of the number 220,131,471?

 A: 3, 7, 1497493

Why are those the prime factors of the number 220,131,471?

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 220,131,471

220,131,471
Factor Arrows
373,377,157
Factor Arrows
710,482,451
Factor Arrows
71,497,493

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:

3, 7, 1497493

We can check our work by multiplying all of the prime factors together: 3 x 7 x 7 x 1,497,493 = 220,131,471

This can also be written as 31 x 72 x 1,497,4931 = 220,131,471

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


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