Q: What are the prime factors of the number 6,634,240?

 A: 2, 5, 71, 73

Why are those the prime factors of the number 6,634,240?

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 6,634,240

6,634,240
Factor Arrows
23,317,120
Factor Arrows
21,658,560
Factor Arrows
2829,280
Factor Arrows
2414,640
Factor Arrows
2207,320
Factor Arrows
2103,660
Factor Arrows
251,830
Factor Arrows
225,915
Factor Arrows
55,183
Factor Arrows
7173

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, 71, 73

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 71 x 73 = 6,634,240

This can also be written as 28 x 51 x 711 x 731 = 6,634,240

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


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