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Prime time (Posted on 2010-10-08) Difficulty: 4 of 5
1. How many primes are in a clock if you regard the numbers on its face as a continuous clockwise string of digits; not to exceed 15 digits i.e. one full round?

2.Same question for a counterclockwise direction.

3.Same question for a digital watch ((HH(0-23)MM(0-59)) - in ascending order).

No Solution Yet Submitted by Ady TZIDON    
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  Subject Author Date
Some Thoughtscomputer solution for parts 1 and 2Charlie2010-10-08 15:34:46
Hints/Tipsre: Interpretation, and ReferenceAdy TZIDON2010-10-08 15:02:39
Interpretation, and Referenceed bottemiller2010-10-08 14:45:32
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