Q: What are the prime factors of the number 741,208,020?

 A: 2, 3, 5, 7, 79, 89, 251

Why are those the prime factors of the number 741,208,020?

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 741,208,020

741,208,020
Factor Arrows
2370,604,010
Factor Arrows
2185,302,005
Factor Arrows
361,767,335
Factor Arrows
512,353,467
Factor Arrows
71,764,781
Factor Arrows
7922,339
Factor Arrows
89251

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, 5, 7, 79, 89, 251

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 5 x 7 x 79 x 89 x 251 = 741,208,020

This can also be written as 22 x 31 x 51 x 71 x 791 x 891 x 2511 = 741,208,020

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


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