Q: What are the prime factors of the number 4,306,432?

 A: 2, 13, 647

Why are those the prime factors of the number 4,306,432?

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 4,306,432

4,306,432
Factor Arrows
22,153,216
Factor Arrows
21,076,608
Factor Arrows
2538,304
Factor Arrows
2269,152
Factor Arrows
2134,576
Factor Arrows
267,288
Factor Arrows
233,644
Factor Arrows
216,822
Factor Arrows
28,411
Factor Arrows
13647

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, 647

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 2 x 2 x 2 x 13 x 647 = 4,306,432

This can also be written as 29 x 131 x 6471 = 4,306,432

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


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