Q: What are the prime factors of the number 286,210,680?

 A: 2, 3, 5, 7, 19, 79, 227

Why are those the prime factors of the number 286,210,680?

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 286,210,680

286,210,680
Factor Arrows
2143,105,340
Factor Arrows
271,552,670
Factor Arrows
235,776,335
Factor Arrows
311,925,445
Factor Arrows
52,385,089
Factor Arrows
7340,727
Factor Arrows
1917,933
Factor Arrows
79227

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, 7, 19, 79, 227

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 5 x 7 x 19 x 79 x 227 = 286,210,680

This can also be written as 23 x 31 x 51 x 71 x 191 x 791 x 2271 = 286,210,680

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


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