Q: What are the prime factors of the number 42,110,208?

 A: 2, 3, 7, 373

Why are those the prime factors of the number 42,110,208?

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 42,110,208

42,110,208
Factor Arrows
221,055,104
Factor Arrows
210,527,552
Factor Arrows
25,263,776
Factor Arrows
22,631,888
Factor Arrows
21,315,944
Factor Arrows
2657,972
Factor Arrows
2328,986
Factor Arrows
2164,493
Factor Arrows
354,831
Factor Arrows
318,277
Factor Arrows
72,611
Factor Arrows
7373

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, 373

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 2 x 2 x 3 x 3 x 7 x 7 x 373 = 42,110,208

This can also be written as 28 x 32 x 72 x 3731 = 42,110,208

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


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