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)

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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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