Q: What are the prime factors of the number 197,131,104?

 A: 2, 3, 151, 1511

Why are those the prime factors of the number 197,131,104?

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 197,131,104

197,131,104
Factor Arrows
298,565,552
Factor Arrows
249,282,776
Factor Arrows
224,641,388
Factor Arrows
212,320,694
Factor Arrows
26,160,347
Factor Arrows
32,053,449
Factor Arrows
3684,483
Factor Arrows
3228,161
Factor Arrows
1511,511

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, 151, 1511

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 3 x 3 x 3 x 151 x 1,511 = 197,131,104

This can also be written as 25 x 33 x 1511 x 1,5111 = 197,131,104

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


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