Q: What are the prime factors of the number 74,242,553?

 A: 7, 11, 17, 43, 1319

Why are those the prime factors of the number 74,242,553?

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 74,242,553

74,242,553
Factor Arrows
710,606,079
Factor Arrows
11964,189
Factor Arrows
1756,717
Factor Arrows
431,319

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:

7, 11, 17, 43, 1319

We can check our work by multiplying all of the prime factors together: 7 x 11 x 17 x 43 x 1,319 = 74,242,553

This can also be written as 71 x 111 x 171 x 431 x 1,3191 = 74,242,553

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


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