Q: What are the prime factors of the number 154,212,417?

 A: 3, 19, 127, 263

Why are those the prime factors of the number 154,212,417?

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 154,212,417

154,212,417
Factor Arrows
351,404,139
Factor Arrows
317,134,713
Factor Arrows
35,711,571
Factor Arrows
31,903,857
Factor Arrows
3634,619
Factor Arrows
1933,401
Factor Arrows
127263

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:

3, 19, 127, 263

We can check our work by multiplying all of the prime factors together: 3 x 3 x 3 x 3 x 3 x 19 x 127 x 263 = 154,212,417

This can also be written as 35 x 191 x 1271 x 2631 = 154,212,417

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


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