Q: What are the prime factors of the number 871,263?

 A: 3, 23, 61

Why are those the prime factors of the number 871,263?

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 871,263

871,263
Factor Arrows
3290,421
Factor Arrows
396,807
Factor Arrows
332,269
Factor Arrows
231,403
Factor Arrows
2361

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, 23, 61

We can check our work by multiplying all of the prime factors together: 3 x 3 x 3 x 23 x 23 x 61 = 871,263

This can also be written as 33 x 232 x 611 = 871,263

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


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