Q: What are the prime factors of the number 245,750,742?

 A: 2, 3, 17, 643, 1249

Why are those the prime factors of the number 245,750,742?

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 245,750,742

245,750,742
Factor Arrows
2122,875,371
Factor Arrows
340,958,457
Factor Arrows
313,652,819
Factor Arrows
17803,107
Factor Arrows
6431,249

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, 17, 643, 1249

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 17 x 643 x 1,249 = 245,750,742

This can also be written as 21 x 32 x 171 x 6431 x 1,2491 = 245,750,742

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


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