Q: What are the prime factors of the number 219,740,976?

 A: 2, 3, 7, 13, 41, 409

Why are those the prime factors of the number 219,740,976?

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 219,740,976

219,740,976
Factor Arrows
2109,870,488
Factor Arrows
254,935,244
Factor Arrows
227,467,622
Factor Arrows
213,733,811
Factor Arrows
34,577,937
Factor Arrows
31,525,979
Factor Arrows
7217,997
Factor Arrows
1316,769
Factor Arrows
41409

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, 7, 13, 41, 409

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 3 x 7 x 13 x 41 x 409 = 219,740,976

This can also be written as 24 x 32 x 71 x 131 x 411 x 4091 = 219,740,976

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


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