Q: What are the prime factors of the number 3,190,128?

 A: 2, 3, 41, 1621

Why are those the prime factors of the number 3,190,128?

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 3,190,128

3,190,128
Factor Arrows
21,595,064
Factor Arrows
2797,532
Factor Arrows
2398,766
Factor Arrows
2199,383
Factor Arrows
366,461
Factor Arrows
411,621

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, 41, 1621

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 41 x 1,621 = 3,190,128

This can also be written as 24 x 31 x 411 x 1,6211 = 3,190,128

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


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