Q: What are the prime factors of the number 40,501,128?

 A: 2, 3, 31, 54437

Why are those the prime factors of the number 40,501,128?

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 40,501,128

40,501,128
Factor Arrows
220,250,564
Factor Arrows
210,125,282
Factor Arrows
25,062,641
Factor Arrows
31,687,547
Factor Arrows
3154,437

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, 31, 54437

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 31 x 54,437 = 40,501,128

This can also be written as 23 x 31 x 311 x 54,4371 = 40,501,128

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


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