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Though this be madness, yet there is method in it... (Posted on 2012-09-20) Difficulty: 2 of 5
From a posting to the Math Fun mailing list by R. W. Gosper, Dec 03 2009:

Gosper: I just reordered checks.
Bank Lady: Where would you like the numbering to start?
Gosper: What was my last one?
Bank Lady: 1093
Gosper: Well then obviously 3511 .
Bank Lady: [Opens mouth. Decides not to ask. Resumes typing.]

My question : How many checks can you order for Mr. Gosper's checkbook, using his numbering system?

  Submitted by Ady TZIDON    
Rating: 4.3333 (3 votes)
Solution: (Hide)
Only one. Maybe there other Wieferich Primes , but the Bank Lady would not know them. Confer other posts.

Comments: ( You must be logged in to post comments.)
  Subject Author Date
SolutionSolutionMath Man2013-04-14 20:40:53
Some Thoughtsatt: JERAdy TZIDON2012-09-23 12:13:41
re: SolutionJer2012-09-20 22:34:50
Some ThoughtsMy answerCaleb2012-09-20 20:35:30
SolutionSolutionChris, PhD2012-09-20 11:56:14
Some ThoughtsBest Answerbroll2012-09-20 10:42:10
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