perplexus.info :: Numbers : 10001, 100010001, ....

10001, 100010001, .... (Posted on 2003-05-23)

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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