Q: What are the prime factors of the number 42,031,712?

 A: 2, 1019, 1289

Why are those the prime factors of the number 42,031,712?

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 42,031,712

42,031,712
Factor Arrows
221,015,856
Factor Arrows
210,507,928
Factor Arrows
25,253,964
Factor Arrows
22,626,982
Factor Arrows
21,313,491
Factor Arrows
1,0191,289

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, 1019, 1289

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 1,019 x 1,289 = 42,031,712

This can also be written as 25 x 1,0191 x 1,2891 = 42,031,712

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


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