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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)

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  Subject Author Date
re(3): Does it continue?broll2017-09-23 23:06:44
re(2): Does it continue?Math Man2017-09-23 19:36:03
re(2): Does it continue?Jer2017-09-18 07:35:20
re: Does it continue?broll2017-09-17 23:05:37
Does it continue?Jer2017-09-17 21:07:16
Some ThoughtsYes and no.broll2017-09-17 00:53:50
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