Q: What are the prime factors of the number 255,301,740?

 A: 2, 3, 5, 31, 101, 151

Why are those the prime factors of the number 255,301,740?

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 255,301,740

255,301,740
Factor Arrows
2127,650,870
Factor Arrows
263,825,435
Factor Arrows
321,275,145
Factor Arrows
37,091,715
Factor Arrows
32,363,905
Factor Arrows
5472,781
Factor Arrows
3115,251
Factor Arrows
101151

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, 31, 101, 151

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 3 x 5 x 31 x 101 x 151 = 255,301,740

This can also be written as 22 x 33 x 51 x 311 x 1011 x 1511 = 255,301,740

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


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