Q: What are the prime factors of the number 874,240?

 A: 2, 5, 683

Why are those the prime factors of the number 874,240?

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 874,240

874,240
Factor Arrows
2437,120
Factor Arrows
2218,560
Factor Arrows
2109,280
Factor Arrows
254,640
Factor Arrows
227,320
Factor Arrows
213,660
Factor Arrows
26,830
Factor Arrows
23,415
Factor Arrows
5683

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, 683

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 2 x 2 x 5 x 683 = 874,240

This can also be written as 28 x 51 x 6831 = 874,240

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


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