How to check whether a number is prime or not?
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How to check whether a number is prime or not....
Divide the number by it's factors.....
If dividing the number by it's factors, only two of them have the remainder as 0 then the number is prime....
Ex- 3,7, etc...
Divide the number by it's factors.....
If dividing the number by it's factors, only two of them have the remainder as 0 then the number is prime....
Ex- 3,7, etc...
TheRevenant01:
Could be explained better!
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Prime numbers are the numbers which can only be divided by itself and 1. The two factors in all the cases are 1 and the number themself.
The best way to check if a number is prime or not is to split the number into its factors.
For example, 4 cannot be taken as prime number because it can be divided by a number other than itself and 1.
For example, 5 can be taken as prime number because it cannot be divided by any other number than itself and 1.
The best way to check if a number is prime or not is to split the number into its factors.
For example, 4 cannot be taken as prime number because it can be divided by a number other than itself and 1.
For example, 5 can be taken as prime number because it cannot be divided by any other number than itself and 1.
4= 2*2*1 doesn't just mean it has 3 factors!
Well then 1 would have infinite factors!
Thanks for reporting :)
Corrected.
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