Q: What are the prime factors of the number 73,821,858?

 A: 2, 3, 11, 23, 4421

Why are those the prime factors of the number 73,821,858?

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 73,821,858

73,821,858
Factor Arrows
236,910,929
Factor Arrows
312,303,643
Factor Arrows
111,118,513
Factor Arrows
11101,683
Factor Arrows
234,421

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, 11, 23, 4421

We can check our work by multiplying all of the prime factors together: 2 x 3 x 11 x 11 x 23 x 4,421 = 73,821,858

This can also be written as 21 x 31 x 112 x 231 x 4,4211 = 73,821,858

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


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