Q: What are the prime factors of the number 72,535,760?

 A: 2, 5, 11, 139, 593

Why are those the prime factors of the number 72,535,760?

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 72,535,760

72,535,760
Factor Arrows
236,267,880
Factor Arrows
218,133,940
Factor Arrows
29,066,970
Factor Arrows
24,533,485
Factor Arrows
5906,697
Factor Arrows
1182,427
Factor Arrows
139593

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, 5, 11, 139, 593

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 5 x 11 x 139 x 593 = 72,535,760

This can also be written as 24 x 51 x 111 x 1391 x 5931 = 72,535,760

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


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