Q: What are the prime factors of the number 261,146,656?

 A: 2, 17, 480049

Why are those the prime factors of the number 261,146,656?

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 261,146,656

261,146,656
Factor Arrows
2130,573,328
Factor Arrows
265,286,664
Factor Arrows
232,643,332
Factor Arrows
216,321,666
Factor Arrows
28,160,833
Factor Arrows
17480,049

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, 17, 480049

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 17 x 480,049 = 261,146,656

This can also be written as 25 x 171 x 480,0491 = 261,146,656

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


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