Q: What are the prime factors of the number 261,234,148?

 A: 2, 7, 31, 300961

Why are those the prime factors of the number 261,234,148?

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 261,234,148

261,234,148
Factor Arrows
2130,617,074
Factor Arrows
265,308,537
Factor Arrows
79,329,791
Factor Arrows
31300,961

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, 7, 31, 300961

We can check our work by multiplying all of the prime factors together: 2 x 2 x 7 x 31 x 300,961 = 261,234,148

This can also be written as 22 x 71 x 311 x 300,9611 = 261,234,148

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


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