Is 209 prime or composite? If it is a composite number, please decompose it into prime factors
Total number, 209 = 11 * 19
27, 1, 29, 31, 46, 57, 61, 78, 87, 45, which are prime numbers? Which are composite numbers?
The prime number is 29.31.61
Total: 27.46.57.78.45
It's nothing
Is 57 a prime number? Is it a composite number?
It's not prime. It's composite