Q: What are the prime factors of the number 782,496?

 A: 2, 3, 11, 13, 19

Why are those the prime factors of the number 782,496?

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 782,496

782,496
Factor Arrows
2391,248
Factor Arrows
2195,624
Factor Arrows
297,812
Factor Arrows
248,906
Factor Arrows
224,453
Factor Arrows
38,151
Factor Arrows
32,717
Factor Arrows
11247
Factor Arrows
1319

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, 13, 19

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 3 x 11 x 13 x 19 = 782,496

This can also be written as 25 x 32 x 111 x 131 x 191 = 782,496

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


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