Q: What are the prime factors of the number 83,505,840?

 A: 2, 3, 5, 11, 47, 673

Why are those the prime factors of the number 83,505,840?

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 83,505,840

83,505,840
Factor Arrows
241,752,920
Factor Arrows
220,876,460
Factor Arrows
210,438,230
Factor Arrows
25,219,115
Factor Arrows
31,739,705
Factor Arrows
5347,941
Factor Arrows
1131,631
Factor Arrows
47673

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, 11, 47, 673

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 5 x 11 x 47 x 673 = 83,505,840

This can also be written as 24 x 31 x 51 x 111 x 471 x 6731 = 83,505,840

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


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