Q: What are the prime factors of the number 53,374,272?

 A: 2, 3, 7, 151, 263

Why are those the prime factors of the number 53,374,272?

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 53,374,272

53,374,272
Factor Arrows
226,687,136
Factor Arrows
213,343,568
Factor Arrows
26,671,784
Factor Arrows
23,335,892
Factor Arrows
21,667,946
Factor Arrows
2833,973
Factor Arrows
3277,991
Factor Arrows
739,713
Factor Arrows
151263

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, 151, 263

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 3 x 7 x 151 x 263 = 53,374,272

This can also be written as 26 x 31 x 71 x 1511 x 2631 = 53,374,272

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


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