Q: What are the prime factors of the number 731,655,408?

 A: 2, 3, 11, 967, 1433

Why are those the prime factors of the number 731,655,408?

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 731,655,408

731,655,408
Factor Arrows
2365,827,704
Factor Arrows
2182,913,852
Factor Arrows
291,456,926
Factor Arrows
245,728,463
Factor Arrows
315,242,821
Factor Arrows
111,385,711
Factor Arrows
9671,433

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, 11, 967, 1433

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 11 x 967 x 1,433 = 731,655,408

This can also be written as 24 x 31 x 111 x 9671 x 1,4331 = 731,655,408

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


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