Q: What are the prime factors of the number 783,104?

 A: 2, 7, 19, 23

Why are those the prime factors of the number 783,104?

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 783,104

783,104
Factor Arrows
2391,552
Factor Arrows
2195,776
Factor Arrows
297,888
Factor Arrows
248,944
Factor Arrows
224,472
Factor Arrows
212,236
Factor Arrows
26,118
Factor Arrows
23,059
Factor Arrows
7437
Factor Arrows
1923

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, 7, 19, 23

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 7 x 19 x 23 = 783,104

This can also be written as 28 x 71 x 191 x 231 = 783,104

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


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