Q: What are the prime factors of the number 121,449,810?

 A: 2, 3, 5, 1033, 3919

Why are those the prime factors of the number 121,449,810?

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 121,449,810

121,449,810
Factor Arrows
260,724,905
Factor Arrows
320,241,635
Factor Arrows
54,048,327
Factor Arrows
1,0333,919

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, 1033, 3919

We can check our work by multiplying all of the prime factors together: 2 x 3 x 5 x 1,033 x 3,919 = 121,449,810

This can also be written as 21 x 31 x 51 x 1,0331 x 3,9191 = 121,449,810

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


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