Q: What are the prime factors of the number 65,221,792?

 A: 2, 17, 113, 1061

Why are those the prime factors of the number 65,221,792?

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 65,221,792

65,221,792
Factor Arrows
232,610,896
Factor Arrows
216,305,448
Factor Arrows
28,152,724
Factor Arrows
24,076,362
Factor Arrows
22,038,181
Factor Arrows
17119,893
Factor Arrows
1131,061

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, 17, 113, 1061

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 17 x 113 x 1,061 = 65,221,792

This can also be written as 25 x 171 x 1131 x 1,0611 = 65,221,792

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


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