perplexus.info :: Numbers : Twin and reversible

Home > Numbers

Twin and reversible (Posted on 2019-02-20)

Below is an example of twin & reversible primes:
(173313197, 173313199); and (791313371, 991313371)

Find the smallest non trivial pair with similar features .

See The Solution Submitted by Ady TZIDON

No Rating

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

Puzzle Answer

Comment 5 of 5 |

Supposedly, the first two non-trivial pairs are as follows:

• (11, 13) and, (11, 31)

• (71, 73) and, (17, 36)

However, one of the members in th first pair, viz. 11 is a palindrome.

Accordingly, the first non-trivial pair must be:

(71,73) and (17,37)

Posted by K Sengupta on 2022-06-08 00:15:04

Please log in:

Forums (0)
Newest Problems
Random Problem
FAQ | About This Site
Site Statistics
New Comments (3)
Unsolved Problems
Top Rated Problems
This month's top
Most Commented On

Chatterbox:


perplexus dot info