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January 30, 2015

January 30, 2015

Posted by **peter** on Thursday, October 27, 2011 at 12:21pm.

- math -
**sam**, Thursday, October 27, 2011 at 2:52pmbit.ly/o3fZeG

- math -
**Steve**, Thursday, October 27, 2011 at 4:02pmThe only teen primes are 13 and 17 and 19

17 is no good, since 18,19,20 are not all composite.

So, they are 13 and 19

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