Q: What are the prime factors of the number 145,844?

 A: 2, 19, 101

Why are those the prime factors of the number 145,844?

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 145,844

145,844
Factor Arrows
272,922
Factor Arrows
236,461
Factor Arrows
191,919
Factor Arrows
19101

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, 19, 101

We can check our work by multiplying all of the prime factors together: 2 x 2 x 19 x 19 x 101 = 145,844

This can also be written as 22 x 192 x 1011 = 145,844

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


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