Q: What are the prime factors of the number 288,728?

 A: 2, 11, 17, 193

Why are those the prime factors of the number 288,728?

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 288,728

288,728
Factor Arrows
2144,364
Factor Arrows
272,182
Factor Arrows
236,091
Factor Arrows
113,281
Factor Arrows
17193

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, 11, 17, 193

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 11 x 17 x 193 = 288,728

This can also be written as 23 x 111 x 171 x 1931 = 288,728

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


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