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10001, 100010001, .... (Posted on 2003-05-23) Difficulty: 3 of 5
Consider the following sequence:

10001, 100010001, 1000100010001, 10001000100010001, 100010001000100010001,....

Show that none of them are prime numbers.

See The Solution Submitted by Fernando    
Rating: 3.3333 (6 votes)

Comments: ( Back to comment list | You must be logged in to post comments.)
Doesn't belong here | Comment 10 of 12 |
Since the solution requires math and there are prime numbers involved I think it should go in just math or numbers. But I guess the people who placed it just saw it contained a sequence and were too lazy to go any farther than that. 
  Posted by Corey on 2004-09-28 22:49:31
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