Q: What are the prime factors of the number 303,315,250?

 A: 2, 5, 7, 353, 491

Why are those the prime factors of the number 303,315,250?

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 303,315,250

303,315,250
Factor Arrows
2151,657,625
Factor Arrows
530,331,525
Factor Arrows
56,066,305
Factor Arrows
51,213,261
Factor Arrows
7173,323
Factor Arrows
353491

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, 353, 491

We can check our work by multiplying all of the prime factors together: 2 x 5 x 5 x 5 x 7 x 353 x 491 = 303,315,250

This can also be written as 21 x 53 x 71 x 3531 x 4911 = 303,315,250

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


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