Q: What are the prime factors of the number 255,737,520?

 A: 2, 3, 5, 197, 601

Why are those the prime factors of the number 255,737,520?

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 255,737,520

255,737,520
Factor Arrows
2127,868,760
Factor Arrows
263,934,380
Factor Arrows
231,967,190
Factor Arrows
215,983,595
Factor Arrows
35,327,865
Factor Arrows
31,775,955
Factor Arrows
3591,985
Factor Arrows
5118,397
Factor Arrows
197601

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, 197, 601

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 3 x 3 x 5 x 197 x 601 = 255,737,520

This can also be written as 24 x 33 x 51 x 1971 x 6011 = 255,737,520

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


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