Q: What are the prime factors of the number 235,051,520?

 A: 2, 5, 11, 17, 491

Why are those the prime factors of the number 235,051,520?

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 235,051,520

235,051,520
Factor Arrows
2117,525,760
Factor Arrows
258,762,880
Factor Arrows
229,381,440
Factor Arrows
214,690,720
Factor Arrows
27,345,360
Factor Arrows
23,672,680
Factor Arrows
21,836,340
Factor Arrows
2918,170
Factor Arrows
2459,085
Factor Arrows
591,817
Factor Arrows
118,347
Factor Arrows
17491

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, 17, 491

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 2 x 2 x 2 x 5 x 11 x 17 x 491 = 235,051,520

This can also be written as 29 x 51 x 111 x 171 x 4911 = 235,051,520

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


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