Q: What are the prime factors of the number 65,145,516?

 A: 2, 3, 43, 191, 661

Why are those the prime factors of the number 65,145,516?

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 65,145,516

65,145,516
Factor Arrows
232,572,758
Factor Arrows
216,286,379
Factor Arrows
35,428,793
Factor Arrows
43126,251
Factor Arrows
191661

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, 43, 191, 661

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 43 x 191 x 661 = 65,145,516

This can also be written as 22 x 31 x 431 x 1911 x 6611 = 65,145,516

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


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