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Does it continue? 2: Prime or not? (Posted on 2017-09-16) Difficulty: 3 of 5
Before trying the problems "note your opinion as to whether the observed pattern is known to continue, known not to continue, or not known at all."

Is 7013*2n+1 always composite?

Is 78557*2n+1 always composite?

No Solution Yet Submitted by Jer    
Rating: 5.0000 (1 votes)

Comments: ( Back to comment list | You must be logged in to post comments.)
re(2): Does it continue? | Comment 5 of 6 |
(In reply to re: Does it continue? by broll)

You should avoid posting answers to problems in the queue before they are posted.



  Posted by Math Man on 2017-09-23 19:36:03
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