21 of them
Chat with our AI personalities
Any prime number is relatively prime to any other prime number.
wow. no its not a prime number , its even for a start meaning its not prime , and it has many factors , 1,2,4,8 ...
Square numbers have too many factors to be prime.
Every prime number has exactly 2 factors, 1 and the number itself.
None, if a number is divisible by 210 then it is not a prime number!