Q: What are the prime factors of the number 64,574,432?

 A: 2, 13, 17, 23, 397

Why are those the prime factors of the number 64,574,432?

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 64,574,432

64,574,432
Factor Arrows
232,287,216
Factor Arrows
216,143,608
Factor Arrows
28,071,804
Factor Arrows
24,035,902
Factor Arrows
22,017,951
Factor Arrows
13155,227
Factor Arrows
179,131
Factor Arrows
23397

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, 13, 17, 23, 397

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 13 x 17 x 23 x 397 = 64,574,432

This can also be written as 25 x 131 x 171 x 231 x 3971 = 64,574,432

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


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