Q: What are the prime factors of the number 65,898,816?

 A: 2, 3, 151, 2273

Why are those the prime factors of the number 65,898,816?

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 65,898,816

65,898,816
Factor Arrows
232,949,408
Factor Arrows
216,474,704
Factor Arrows
28,237,352
Factor Arrows
24,118,676
Factor Arrows
22,059,338
Factor Arrows
21,029,669
Factor Arrows
3343,223
Factor Arrows
1512,273

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, 151, 2273

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 3 x 151 x 2,273 = 65,898,816

This can also be written as 26 x 31 x 1511 x 2,2731 = 65,898,816

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


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