Q: What are the prime factors of the number 65,223,960?

 A: 2, 3, 5, 19, 28607

Why are those the prime factors of the number 65,223,960?

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 65,223,960

65,223,960
Factor Arrows
232,611,980
Factor Arrows
216,305,990
Factor Arrows
28,152,995
Factor Arrows
32,717,665
Factor Arrows
5543,533
Factor Arrows
1928,607

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, 28607

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 5 x 19 x 28,607 = 65,223,960

This can also be written as 23 x 31 x 51 x 191 x 28,6071 = 65,223,960

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


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