Q: What are the prime factors of the number 41,021,440?

 A: 2, 5, 2003

Why are those the prime factors of the number 41,021,440?

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 41,021,440

41,021,440
Factor Arrows
220,510,720
Factor Arrows
210,255,360
Factor Arrows
25,127,680
Factor Arrows
22,563,840
Factor Arrows
21,281,920
Factor Arrows
2640,960
Factor Arrows
2320,480
Factor Arrows
2160,240
Factor Arrows
280,120
Factor Arrows
240,060
Factor Arrows
220,030
Factor Arrows
210,015
Factor Arrows
52,003

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, 5, 2003

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 5 x 2,003 = 41,021,440

This can also be written as 212 x 51 x 2,0031 = 41,021,440

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


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