Q: What are the prime factors of the number 7,015,424?

 A: 2, 13, 17, 31

Why are those the prime factors of the number 7,015,424?

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 7,015,424

7,015,424
Factor Arrows
23,507,712
Factor Arrows
21,753,856
Factor Arrows
2876,928
Factor Arrows
2438,464
Factor Arrows
2219,232
Factor Arrows
2109,616
Factor Arrows
254,808
Factor Arrows
227,404
Factor Arrows
213,702
Factor Arrows
26,851
Factor Arrows
13527
Factor Arrows
1731

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, 13, 17, 31

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 2 x 2 x 13 x 17 x 31 = 7,015,424

This can also be written as 210 x 131 x 171 x 311 = 7,015,424

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


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