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Prime or Composite? (2) (Posted on 2022-12-10) Difficulty: 3 of 5
Each of p and 8p2 + 1 is a prime number.

Is 8p2 - 1 a prime number?

  • If not, provide an example.
  • If so, prove it.
Computer program and spreadsheet aided methodologies are welcome, but an analytical solution is preferred.

*** Adapted from a problem appearing in a Russian Mathematical Olympiad.

See The Solution Submitted by K Sengupta    
Rating: 5.0000 (1 votes)

Comments: ( You must be logged in to post comments.)
  Subject Author Date
re: Concierge website servicesK Sengupta2024-03-08 11:27:48
Concierge website servicesCodyDunning2024-03-08 10:31:18
No SubjectK Sengupta2022-12-23 18:03:27
re: No SubjectGir Li2022-12-23 11:14:07
No SubjectK Sengupta2022-12-19 01:57:11
Create Logo Design for company in Dubaijonemartin2022-12-19 00:49:57
SolutionAnalytical solution (spoiler)Steve Herman2022-12-10 07:39:03
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