Q: What are the prime factors of the number 83,242,800?

 A: 2, 3, 5, 19, 1217

Why are those the prime factors of the number 83,242,800?

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 83,242,800

83,242,800
Factor Arrows
241,621,400
Factor Arrows
220,810,700
Factor Arrows
210,405,350
Factor Arrows
25,202,675
Factor Arrows
31,734,225
Factor Arrows
3578,075
Factor Arrows
5115,615
Factor Arrows
523,123
Factor Arrows
191,217

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, 5, 19, 1217

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 5 x 5 x 19 x 1,217 = 83,242,800

This can also be written as 24 x 32 x 52 x 191 x 1,2171 = 83,242,800

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


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