Q: What are the prime factors of the number 64,111,509?

 A: 3, 7, 11, 71, 1303

Why are those the prime factors of the number 64,111,509?

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 64,111,509

64,111,509
Factor Arrows
321,370,503
Factor Arrows
37,123,501
Factor Arrows
71,017,643
Factor Arrows
1192,513
Factor Arrows
711,303

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:

3, 7, 11, 71, 1303

We can check our work by multiplying all of the prime factors together: 3 x 3 x 7 x 11 x 71 x 1,303 = 64,111,509

This can also be written as 32 x 71 x 111 x 711 x 1,3031 = 64,111,509

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


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