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  • That includes numbers greater than 1.2*10**9 Commented Sep 19, 2013 at 19:41
  • I think the number in the question was 1.2E10. Commented Sep 19, 2013 at 19:58
  • Whatever it is ;-) your regex still allows the first digit to 2 or more, which means it doesn't "stop" at 120000... Commented Sep 19, 2013 at 21:33