perplexus.info :: Numbers : Does it continue? 2: Prime or not?

Does it continue? 2: Prime or not? (Posted on 2017-09-16)

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 4 of 6 |

(In reply to re: Does it continue? by broll)

I hope you are pleasantly surprised.

Posted by Jer on 2017-09-18 07:35:20

Please log in:

Forums (0)
Newest Problems
Random Problem
FAQ | About This Site
Site Statistics
New Comments (0)
Unsolved Problems
Top Rated Problems
This month's top
Most Commented On

Chatterbox:


perplexus dot info