i=2
while(i<100):
j=2
while(j<(i/j)):
if not(i%j):
break
j=j+1
if j>i/j:
print i,"是素数"
i=i+1
print "good bye!"
i=2
while(i<100):
j=2
while(j<(i/j)):
if not(i%j):
break
j=j+1
if j>i/j:
print i,"是素数"
i=i+1
print "good bye!"