Q: What are the prime factors of the number 65,221,299?

 A: 3, 11, 13, 17, 271

Why are those the prime factors of the number 65,221,299?

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 65,221,299

65,221,299
Factor Arrows
321,740,433
Factor Arrows
37,246,811
Factor Arrows
11658,801
Factor Arrows
1159,891
Factor Arrows
134,607
Factor Arrows
17271

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:

3, 11, 13, 17, 271

We can check our work by multiplying all of the prime factors together: 3 x 3 x 11 x 11 x 13 x 17 x 271 = 65,221,299

This can also be written as 32 x 112 x 131 x 171 x 2711 = 65,221,299

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


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