First, find the prime factorization of the number. For instance, with 45: 45 = 3 * 3 * 5 = 32 * 51 Now, from this prime factorization, any numbers whose prime factorizations do not include these factors is coprime to the number you have.
The LCM of 60 and 18 is 180
a prime square
It is a Prime Number.
There is no three digit prime number whose square root is a prime number. Prime numbers have no factors other than 1 and themselves. Any number having a prime number as a square root is a composite number.
29 is the answer. 29 is prime. 2+9=11 which is prime. 9-2=7 which is prime.
2 and 3.
A prime number.
37 is a prime number whose factors are itself and one