perplexus.info :: Numbers : Arithmetic prime

Arithmetic prime (Posted on 2019-04-25)

What is the smallest positive integer k such that k+1, 2k+1, 3k+1, 4k+1 are all primes?

No Solution Yet Submitted by Danish Ahmed Khan

No Rating

Comments: ( You must be logged in to post comments.)

Subject	Author	Date
Puzzle Answer	K Sengupta	2022-06-04 00:31:40
re: computer solution - OEIS findings	Brian Smith	2019-04-26 01:21:09
computer solution	Charlie	2019-04-25 14:50:25

Please log in:

Forums (0)
Newest Problems
Random Problem
FAQ | About This Site
Site Statistics
New Comments (13)
Unsolved Problems
Top Rated Problems
This month's top
Most Commented On

Chatterbox:


perplexus dot info