perplexus.info :: Numbers : Unique semiprime number

Unique semiprime number (Posted on 2010-04-17)

What 3-digit number, a product of two distinct 2-digit primes has its digits (none of them being prime) in strictly ascending order ?

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 3 of 3 |

The required 3 digit number is 689.

Posted by K Sengupta on 2023-09-18 02:25:28

Please log in:

Forums (0)
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