Q: What are the prime factors of the number 18,975,976?

 A: 2, 29, 263, 311

Why are those the prime factors of the number 18,975,976?

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 18,975,976

18,975,976
Factor Arrows
29,487,988
Factor Arrows
24,743,994
Factor Arrows
22,371,997
Factor Arrows
2981,793
Factor Arrows
263311

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, 29, 263, 311

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 29 x 263 x 311 = 18,975,976

This can also be written as 23 x 291 x 2631 x 3111 = 18,975,976

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


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