Q: What are the prime factors of the number 441,365,418?

 A: 2, 3, 13, 89, 21193

Why are those the prime factors of the number 441,365,418?

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 441,365,418

441,365,418
Factor Arrows
2220,682,709
Factor Arrows
373,560,903
Factor Arrows
324,520,301
Factor Arrows
131,886,177
Factor Arrows
8921,193

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, 13, 89, 21193

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 13 x 89 x 21,193 = 441,365,418

This can also be written as 21 x 32 x 131 x 891 x 21,1931 = 441,365,418

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


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