Q: What are the prime factors of the number 121,412,448?

 A: 2, 3, 61, 6911

Why are those the prime factors of the number 121,412,448?

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 121,412,448

121,412,448
Factor Arrows
260,706,224
Factor Arrows
230,353,112
Factor Arrows
215,176,556
Factor Arrows
27,588,278
Factor Arrows
23,794,139
Factor Arrows
31,264,713
Factor Arrows
3421,571
Factor Arrows
616,911

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, 61, 6911

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 3 x 3 x 61 x 6,911 = 121,412,448

This can also be written as 25 x 32 x 611 x 6,9111 = 121,412,448

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


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