Q: What are the prime factors of the number 738,311,520?

 A: 2, 3, 5, 419, 3671

Why are those the prime factors of the number 738,311,520?

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 738,311,520

738,311,520
Factor Arrows
2369,155,760
Factor Arrows
2184,577,880
Factor Arrows
292,288,940
Factor Arrows
246,144,470
Factor Arrows
223,072,235
Factor Arrows
37,690,745
Factor Arrows
51,538,149
Factor Arrows
4193,671

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, 5, 419, 3671

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 3 x 5 x 419 x 3,671 = 738,311,520

This can also be written as 25 x 31 x 51 x 4191 x 3,6711 = 738,311,520

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


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