a, b = map(int, input().split())
num = []
i = 2
for i in range(a, b+1):
j = 2
for j in range(2, i):
if (i % j == 0):
break
else:
num.append(i)
print(sum(num))
num = []
i = 2
for i in range(a, b+1):
j = 2
for j in range(2, i):
if (i % j == 0):
break
else:
num.append(i)
print(sum(num))