Q: What are the prime factors of the number 66,015,326?

 A: 2, 13, 37, 163, 421

Why are those the prime factors of the number 66,015,326?

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 66,015,326

66,015,326
Factor Arrows
233,007,663
Factor Arrows
132,539,051
Factor Arrows
3768,623
Factor Arrows
163421

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, 13, 37, 163, 421

We can check our work by multiplying all of the prime factors together: 2 x 13 x 37 x 163 x 421 = 66,015,326

This can also be written as 21 x 131 x 371 x 1631 x 4211 = 66,015,326

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


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