Q: What are the prime factors of the number 341,121,440?

 A: 2, 5, 11, 19, 101

Why are those the prime factors of the number 341,121,440?

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 341,121,440

341,121,440
Factor Arrows
2170,560,720
Factor Arrows
285,280,360
Factor Arrows
242,640,180
Factor Arrows
221,320,090
Factor Arrows
210,660,045
Factor Arrows
52,132,009
Factor Arrows
11193,819
Factor Arrows
1910,201
Factor Arrows
101101

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, 5, 11, 19, 101

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 5 x 11 x 19 x 101 x 101 = 341,121,440

This can also be written as 25 x 51 x 111 x 191 x 1012 = 341,121,440

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


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