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Big, super and prime (Posted on 2010-10-20) Difficulty: 4 of 5
A superprime is an integer such that all its left-to-right initial segments are prime (e.g. 7331 whose segments are 7, 73, 733, and 7331, all prime).
There is a largest superprime.

Find it.

Source: USA Computing Olympiad, Feb 1995.

No Solution Yet Submitted by Ady TZIDON    
Rating: 3.0000 (2 votes)

Comments: ( You must be logged in to post comments.)
  Subject Author Date
Solved by handJer2010-10-21 15:39:50
re(4): Another method. -- solution for that Euler problem 37broll2010-10-21 12:14:59
Questionre(3): Another method. -- solution for that Euler problem 37Charlie2010-10-21 11:41:36
re(2): Another method. -- solution for that Euler problem 37Charlie2010-10-20 15:18:20
SolutionBasic programming solutionCharlie2010-10-20 14:17:12
re: Another method.Daniel2010-10-20 12:50:37
Some ThoughtsAnother method.broll2010-10-20 12:34:48
computer solutionDaniel2010-10-20 12:02:07
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