Q: What are the prime factors of the number 72,673,455?

 A: 3, 5, 31, 373, 419

Why are those the prime factors of the number 72,673,455?

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 72,673,455

72,673,455
Factor Arrows
324,224,485
Factor Arrows
54,844,897
Factor Arrows
31156,287
Factor Arrows
373419

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:

3, 5, 31, 373, 419

We can check our work by multiplying all of the prime factors together: 3 x 5 x 31 x 373 x 419 = 72,673,455

This can also be written as 31 x 51 x 311 x 3731 x 4191 = 72,673,455

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


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