Q: What are the prime factors of the number 33,133,440?

 A: 2, 3, 5, 17257

Why are those the prime factors of the number 33,133,440?

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 33,133,440

33,133,440
Factor Arrows
216,566,720
Factor Arrows
28,283,360
Factor Arrows
24,141,680
Factor Arrows
22,070,840
Factor Arrows
21,035,420
Factor Arrows
2517,710
Factor Arrows
2258,855
Factor Arrows
386,285
Factor Arrows
517,257

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, 17257

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 3 x 5 x 17,257 = 33,133,440

This can also be written as 27 x 31 x 51 x 17,2571 = 33,133,440

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


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