Q: What are the prime factors of the number 877,760?

 A: 2, 5, 13, 211

Why are those the prime factors of the number 877,760?

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 877,760

877,760
Factor Arrows
2438,880
Factor Arrows
2219,440
Factor Arrows
2109,720
Factor Arrows
254,860
Factor Arrows
227,430
Factor Arrows
213,715
Factor Arrows
52,743
Factor Arrows
13211

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, 13, 211

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 5 x 13 x 211 = 877,760

This can also be written as 26 x 51 x 131 x 2111 = 877,760

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


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