perplexus.info :: Numbers : Prime or Composite? (2)

Home > Numbers

Prime or Composite? (2) (Posted on 2022-12-10)

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: ( Back to comment list | You must be logged in to post comments.)

Create Logo Design for company in Dubai

| Comment 2 of 7 |

Logo Design Dubai is one of the most popular designs in the UAE. It offers a wide range of services for logos, brochures, advertisements, websites, and so on. With a team of creative professionals and seasoned graphic designers, it offers world-class logo design services to clients at competitive prices.<o:p></o:p>

Posted by jonemartin on 2022-12-19 00:49:57

Please log in:

Login:
Password:
Remember me:

Sign up! \| Forgot password

Search:

Search body:

Forums (1)
Newest Problems
Random Problem
FAQ | About This Site
Site Statistics
New Comments (6)
Unsolved Problems
Top Rated Problems
This month's top
Most Commented On

Chatterbox:


perplexus dot info