Q: What are the prime factors of the number 441,021,132?

 A: 2, 3, 1597, 2557

Why are those the prime factors of the number 441,021,132?

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 441,021,132

441,021,132
Factor Arrows
2220,510,566
Factor Arrows
2110,255,283
Factor Arrows
336,751,761
Factor Arrows
312,250,587
Factor Arrows
34,083,529
Factor Arrows
1,5972,557

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, 1597, 2557

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 3 x 1,597 x 2,557 = 441,021,132

This can also be written as 22 x 33 x 1,5971 x 2,5571 = 441,021,132

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


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