19 is the prime number.
105 is not a prime number among them. It is because it is divisible by 5.
105 is not a prime number, as it's factors are: 1, 3, 5, 7, 15, 21, 35, 105.
The prime numbers (factors) of 105 are: 3,5,7
The prime factors of 105 are: 3,5,7
56 and 105
105
Any multiple of 105.
105 is not a prime number. If you say that 105 is a number written in base 6, it is the same as 41 in base 10, which is a prime number.
105 is a composite number. A prime number has only 2 factors which are 1 and itself. Composite numbers are everything else except 1 and 0. 1 and 0 are neither prime, nor composite.
The second one.
105 is not prime. 105 = 3 * 5 * 7