Q: What are the prime factors of the number 185,581,000?

 A: 2, 5, 11, 16871

Why are those the prime factors of the number 185,581,000?

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 185,581,000

185,581,000
Factor Arrows
292,790,500
Factor Arrows
246,395,250
Factor Arrows
223,197,625
Factor Arrows
54,639,525
Factor Arrows
5927,905
Factor Arrows
5185,581
Factor Arrows
1116,871

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, 16871

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 5 x 5 x 5 x 11 x 16,871 = 185,581,000

This can also be written as 23 x 53 x 111 x 16,8711 = 185,581,000

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


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