Q: What are the prime factors of the number 4,967,424?

 A: 2, 3, 7, 11

Why are those the prime factors of the number 4,967,424?

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 4,967,424

4,967,424
Factor Arrows
22,483,712
Factor Arrows
21,241,856
Factor Arrows
2620,928
Factor Arrows
2310,464
Factor Arrows
2155,232
Factor Arrows
277,616
Factor Arrows
238,808
Factor Arrows
219,404
Factor Arrows
29,702
Factor Arrows
24,851
Factor Arrows
31,617
Factor Arrows
3539
Factor Arrows
777
Factor Arrows
711

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, 3, 7, 11

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 3 x 3 x 7 x 7 x 11 = 4,967,424

This can also be written as 210 x 32 x 72 x 111 = 4,967,424

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


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