import math
count = 0
start = int(input('start的数值:'))
end = int(input('end的数值:'))
for i in range(start,end+1):
for j in range(2,int(math.sqrt(i))+1):
if i % j == 0:
break
else:
count +=1
print(i,end=' ')
if count % 16 == 0:
print()
print(f'\n总共有{count}个素数')