Q: What are the prime factors of the number 187,763,520?

 A: 2, 3, 5, 7, 27941

Why are those the prime factors of the number 187,763,520?

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 187,763,520

187,763,520
Factor Arrows
293,881,760
Factor Arrows
246,940,880
Factor Arrows
223,470,440
Factor Arrows
211,735,220
Factor Arrows
25,867,610
Factor Arrows
22,933,805
Factor Arrows
3977,935
Factor Arrows
5195,587
Factor Arrows
727,941

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, 7, 27941

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 3 x 5 x 7 x 27,941 = 187,763,520

This can also be written as 26 x 31 x 51 x 71 x 27,9411 = 187,763,520

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


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