Q: What are the prime factors of the number 121,621,348?

 A: 2, 67, 89, 5099

Why are those the prime factors of the number 121,621,348?

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 121,621,348

121,621,348
Factor Arrows
260,810,674
Factor Arrows
230,405,337
Factor Arrows
67453,811
Factor Arrows
895,099

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, 67, 89, 5099

We can check our work by multiplying all of the prime factors together: 2 x 2 x 67 x 89 x 5,099 = 121,621,348

This can also be written as 22 x 671 x 891 x 5,0991 = 121,621,348

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


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