Q: What are the prime factors of the number 40,100,148?

 A: 2, 3, 11, 131, 773

Why are those the prime factors of the number 40,100,148?

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 40,100,148

40,100,148
Factor Arrows
220,050,074
Factor Arrows
210,025,037
Factor Arrows
33,341,679
Factor Arrows
31,113,893
Factor Arrows
11101,263
Factor Arrows
131773

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, 11, 131, 773

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 11 x 131 x 773 = 40,100,148

This can also be written as 22 x 32 x 111 x 1311 x 7731 = 40,100,148

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


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