Q: What are the prime factors of the number 72,018,176?

 A: 2, 281321

Why are those the prime factors of the number 72,018,176?

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 72,018,176

72,018,176
Factor Arrows
236,009,088
Factor Arrows
218,004,544
Factor Arrows
29,002,272
Factor Arrows
24,501,136
Factor Arrows
22,250,568
Factor Arrows
21,125,284
Factor Arrows
2562,642
Factor Arrows
2281,321

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, 281321

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 281,321 = 72,018,176

This can also be written as 28 x 281,3211 = 72,018,176

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


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