Q: What are the prime factors of the number 19,213,712?

 A: 2, 7, 19, 9029

Why are those the prime factors of the number 19,213,712?

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 19,213,712

19,213,712
Factor Arrows
29,606,856
Factor Arrows
24,803,428
Factor Arrows
22,401,714
Factor Arrows
21,200,857
Factor Arrows
7171,551
Factor Arrows
199,029

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, 9029

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 7 x 19 x 9,029 = 19,213,712

This can also be written as 24 x 71 x 191 x 9,0291 = 19,213,712

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


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