Q: What are the prime factors of the number 245,623,719?

 A: 3, 11, 71, 79, 1327

Why are those the prime factors of the number 245,623,719?

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 245,623,719

245,623,719
Factor Arrows
381,874,573
Factor Arrows
117,443,143
Factor Arrows
71104,833
Factor Arrows
791,327

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, 11, 71, 79, 1327

We can check our work by multiplying all of the prime factors together: 3 x 11 x 71 x 79 x 1,327 = 245,623,719

This can also be written as 31 x 111 x 711 x 791 x 1,3271 = 245,623,719

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


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