def truncatable(n):
global primes
buf = n
trunc = True
while buf > 10:
buf = utils.truncate_right(buf)
if buf not in primes:
trunc = False
break
if trunc == True:
buf = n
while buf > 10:
buf = utils.truncate_left(buf)
if buf not in primes:
trunc = False
break
return trunc
else:
return False
def truncatables(primes):
t = []
for prime in primes:
buf = prime
trunc = True
while buf > 10:
buf = utils.truncate_right(buf)
if buf not in primes:
trunc = False
break
if trunc == True:
buf = prime
while buf > 10:
buf = utils.truncate_left(buf)
if buf not in primes:
trunc = False
break
if trunc:
t.append(prime)
if len(t) > 14:
return t
