Q: What are the prime factors of the number 19,137,104?

 A: 2, 7, 17, 19, 23

Why are those the prime factors of the number 19,137,104?

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 19,137,104

19,137,104
Factor Arrows
29,568,552
Factor Arrows
24,784,276
Factor Arrows
22,392,138
Factor Arrows
21,196,069
Factor Arrows
7170,867
Factor Arrows
1710,051
Factor Arrows
19529
Factor Arrows
2323

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, 17, 19, 23

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 7 x 17 x 19 x 23 x 23 = 19,137,104

This can also be written as 24 x 71 x 171 x 191 x 232 = 19,137,104

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


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