Q: What are the prime factors of the number 194,600?

 A: 2, 5, 7, 139

Why are those the prime factors of the number 194,600?

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 194,600

194,600
Factor Arrows
297,300
Factor Arrows
248,650
Factor Arrows
224,325
Factor Arrows
54,865
Factor Arrows
5973
Factor Arrows
7139

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, 7, 139

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 5 x 5 x 7 x 139 = 194,600

This can also be written as 23 x 52 x 71 x 1391 = 194,600

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


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