Q: What are the prime factors of the number 40,419,248?

 A: 2, 47, 59, 911

Why are those the prime factors of the number 40,419,248?

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 40,419,248

40,419,248
Factor Arrows
220,209,624
Factor Arrows
210,104,812
Factor Arrows
25,052,406
Factor Arrows
22,526,203
Factor Arrows
4753,749
Factor Arrows
59911

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, 47, 59, 911

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 47 x 59 x 911 = 40,419,248

This can also be written as 24 x 471 x 591 x 9111 = 40,419,248

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


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