Q: What are the prime factors of the number 30,605,253?

 A: 3, 7, 17, 37, 331

Why are those the prime factors of the number 30,605,253?

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 30,605,253

30,605,253
Factor Arrows
310,201,751
Factor Arrows
71,457,393
Factor Arrows
7208,199
Factor Arrows
1712,247
Factor Arrows
37331

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, 7, 17, 37, 331

We can check our work by multiplying all of the prime factors together: 3 x 7 x 7 x 17 x 37 x 331 = 30,605,253

This can also be written as 31 x 72 x 171 x 371 x 3311 = 30,605,253

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


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