Question

Check whether of the following no. Are prime or composite
Q-1)2*3+5
Q-2)7*11*13+13
Q-3)3*7+2
Q-4)13*17*19+23*28

Answer 1

1 - 11 is prime no

2- 1014 is a composite no

3- 23 is a prime no

4- 4843 is a composite no