Q: What are the prime factors of the number 247,064,120?

 A: 2, 5, 73, 211, 401

Why are those the prime factors of the number 247,064,120?

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 247,064,120

247,064,120
Factor Arrows
2123,532,060
Factor Arrows
261,766,030
Factor Arrows
230,883,015
Factor Arrows
56,176,603
Factor Arrows
7384,611
Factor Arrows
211401

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, 5, 73, 211, 401

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 5 x 73 x 211 x 401 = 247,064,120

This can also be written as 23 x 51 x 731 x 2111 x 4011 = 247,064,120

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


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