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A comment on Techniques for Factoring Numbers in Your Head. Parent comment

Re:Techniques for Factoring Numbers in Your Head by DoreenMichele on Wednesday January 03, 2018 @09:20PM (#16067464)
You can also prime factor the larger factors. Once you have all the primes, you can build the other numbers.

50 = 2x5x5 So 100 = 2x2x5x5

You can build your other factors of 4,10, 20 and 25 by multiplying the subsets.

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