Q: What are the prime factors of the number 261,353,622?

 A: 2, 3, 31, 1405127

Why are those the prime factors of the number 261,353,622?

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 261,353,622

261,353,622
Factor Arrows
2130,676,811
Factor Arrows
343,558,937
Factor Arrows
311,405,127

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, 31, 1405127

We can check our work by multiplying all of the prime factors together: 2 x 3 x 31 x 1,405,127 = 261,353,622

This can also be written as 21 x 31 x 311 x 1,405,1271 = 261,353,622

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


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