31 is prime.
31 is a prime number so the LCM is 18 x 31 = 558
31 is a prime number
18/31 is already in the simplest fractional form since 31 is a prime number and cannot be reduced further.
1 and 31 (31 is a Prime number).
31 is a prime number
31 is prime so 31 is the prime factorization of 31
31 is already a prime number.
31 has no prime factors because it is a prime number so it has two factors, 1 and 31.
31 is a prime number. Its only prime factor is 31.
31 is prime.
31 is a Prime Number.
31 is a prime number.