Q: What are the prime factors of the number 784,875?

 A: 3, 5, 7, 13, 23

Why are those the prime factors of the number 784,875?

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 784,875

784,875
Factor Arrows
3261,625
Factor Arrows
552,325
Factor Arrows
510,465
Factor Arrows
52,093
Factor Arrows
7299
Factor Arrows
1323

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:

3, 5, 7, 13, 23

We can check our work by multiplying all of the prime factors together: 3 x 5 x 5 x 5 x 7 x 13 x 23 = 784,875

This can also be written as 31 x 53 x 71 x 131 x 231 = 784,875

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


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