Q: What are the prime factors of the number 220,023,320?

 A: 2, 5, 11, 71, 7043

Why are those the prime factors of the number 220,023,320?

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 220,023,320

220,023,320
Factor Arrows
2110,011,660
Factor Arrows
255,005,830
Factor Arrows
227,502,915
Factor Arrows
55,500,583
Factor Arrows
11500,053
Factor Arrows
717,043

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, 11, 71, 7043

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 5 x 11 x 71 x 7,043 = 220,023,320

This can also be written as 23 x 51 x 111 x 711 x 7,0431 = 220,023,320

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


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