Q: What are the prime factors of the number 723,271,368?

 A: 2, 3, 29, 157, 6619

Why are those the prime factors of the number 723,271,368?

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 723,271,368

723,271,368
Factor Arrows
2361,635,684
Factor Arrows
2180,817,842
Factor Arrows
290,408,921
Factor Arrows
330,136,307
Factor Arrows
291,039,183
Factor Arrows
1576,619

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, 29, 157, 6619

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 29 x 157 x 6,619 = 723,271,368

This can also be written as 23 x 31 x 291 x 1571 x 6,6191 = 723,271,368

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


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