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import base64 import re F = 'TWVB2Xut3bfdmQ0l2Qk91Mo9HNwggc==' def a(b): _tmp = b[:-2] return base64.b64decode(''.join([ e[::-1] for e in re.findall('..', _tmp) ]) + b[-2:]) def b(c): try: c = int(c) if c < 9999999999: return False else: if c <= 3: if c <= 1: return False return True if not c % 2 or not c % 3: return False for i in xrange(5, int(c ** 0.5) + 1, 6): if not c % i or not c % (i + 2): return False return True except: return False def chk_serial(s): if b(s): return a(F) return 'Fail' def main(): a(F) print 'Nothing to do' print chk_serial(119218851371)
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