n = intinput()input()input()
def is_primennn:if n < 2:return Falsefor i in range2,int(n∗∗0.5)+12, int(n**0.5) + 12,int(n∗∗0.5)+1:if n % i == 0:return Falsereturn True
if is_primennn:print("YES")else:print("NO")
n = intinput()input()input()
def is_primennn:
if n < 2:
return False
for i in range2,int(n∗∗0.5)+12, int(n**0.5) + 12,int(n∗∗0.5)+1:
if n % i == 0:
return False
return True
if is_primennn:
print("YES")
else:
print("NO")