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According to number theory a prime number is said to that number which have two factors but if we see then the factors can be negative also so there is no number other than 1 which have 2 factor only . For eg 5 the factors are 1,-1,5,and -5 so there are four factors ? Kindly explain

Answer» According to number theory a prime number is said to that number which have two factors but if we see then the factors can be negative also so there is no number other than 1 which have 2 factor only . For eg 5 the factors are 1,-1,5,and -5 so there are four factors ? Kindly explain


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