Q: What are the prime factors of the number 66,445,344?

 A: 2, 3, 7, 23, 1433

Why are those the prime factors of the number 66,445,344?

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 66,445,344

66,445,344
Factor Arrows
233,222,672
Factor Arrows
216,611,336
Factor Arrows
28,305,668
Factor Arrows
24,152,834
Factor Arrows
22,076,417
Factor Arrows
3692,139
Factor Arrows
3230,713
Factor Arrows
732,959
Factor Arrows
231,433

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, 7, 23, 1433

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 3 x 3 x 7 x 23 x 1,433 = 66,445,344

This can also be written as 25 x 32 x 71 x 231 x 1,4331 = 66,445,344

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


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