Q: What are the prime factors of the number 177,015,520?

 A: 2, 5, 11, 43, 2339

Why are those the prime factors of the number 177,015,520?

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 177,015,520

177,015,520
Factor Arrows
288,507,760
Factor Arrows
244,253,880
Factor Arrows
222,126,940
Factor Arrows
211,063,470
Factor Arrows
25,531,735
Factor Arrows
51,106,347
Factor Arrows
11100,577
Factor Arrows
432,339

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, 43, 2339

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 5 x 11 x 43 x 2,339 = 177,015,520

This can also be written as 25 x 51 x 111 x 431 x 2,3391 = 177,015,520

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


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