perplexus.info :: Numbers : Concatenated Triangular Numbers

Concatenated Triangular Numbers (Posted on 2023-08-25)

Find a triangular number that remains triangular when it is concatenated to itself. For example, 6=3*4/2 is triangular and 66=11*12/2 is also triangular.

Find other examples.

No Solution Yet Submitted by K Sengupta

Rating: 4.0000 (1 votes)

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

No Subject

Comment 4 of 4 |

Posted by K Sengupta on 2023-09-14 09:50:14

Please log in:

Login:
Password:
Remember me:

Sign up! \| Forgot password

Search:

Search body:

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

Chatterbox:


perplexus dot info