Q: What are the prime factors of the number 261,015,246?

 A: 2, 3, 17, 43, 83, 239

Why are those the prime factors of the number 261,015,246?

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 261,015,246

261,015,246
Factor Arrows
2130,507,623
Factor Arrows
343,502,541
Factor Arrows
314,500,847
Factor Arrows
17852,991
Factor Arrows
4319,837
Factor Arrows
83239

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, 17, 43, 83, 239

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 17 x 43 x 83 x 239 = 261,015,246

This can also be written as 21 x 32 x 171 x 431 x 831 x 2391 = 261,015,246

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


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