Homework Help: maths help

Posted by me on Wednesday, February 27, 2013 at 6:00pm.

Find the largest four digit number which has a total of exactly 3 factors. Assuming that 1 and the number itself are factors

maths help - Steve, Wednesday, February 27, 2013 at 6:13pm
you want the largest perfect square less than 10000. The three factors will be 1,√n, and n

Any number not a perfect square will have 4 or more factors (or just 2 factors if it is prime)

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