Q: What are the prime factors of the number 65,163,516?

 A: 2, 3, 11, 17, 71, 409

Why are those the prime factors of the number 65,163,516?

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 65,163,516

65,163,516
Factor Arrows
232,581,758
Factor Arrows
216,290,879
Factor Arrows
35,430,293
Factor Arrows
11493,663
Factor Arrows
1729,039
Factor Arrows
71409

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, 11, 17, 71, 409

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 11 x 17 x 71 x 409 = 65,163,516

This can also be written as 22 x 31 x 111 x 171 x 711 x 4091 = 65,163,516

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


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