Q: What are the prime factors of the number 726,746,418?

 A: 2, 3, 1495363

Why are those the prime factors of the number 726,746,418?

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 726,746,418

726,746,418
Factor Arrows
2363,373,209
Factor Arrows
3121,124,403
Factor Arrows
340,374,801
Factor Arrows
313,458,267
Factor Arrows
34,486,089
Factor Arrows
31,495,363

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, 1495363

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 3 x 3 x 3 x 1,495,363 = 726,746,418

This can also be written as 21 x 35 x 1,495,3631 = 726,746,418

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


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