+----+----+----+        
           | A  | B  | C  | 
           +----+----+----+ 
           | D  |    |    |    
 +----+----+----+----+----+----+----+     
 | E  | F  | G  |    | H  | I  | J  |   
 +----+----+----+----+----+----+----+
 | K  |    |    |/// | L  |    |    |
 +----+----+----+----+----+----+----+ 
 | M  |    | N  | O  | P  |    |    |   
 +----+----+----+----+----+----+----+     
           | Q  |    |    |    
           +----+----+----+  
           | R  |    |    |  
           +----+----+----+

1. The answer to each of the clues in this crossnumber puzzle is a prime number.
2. The clue for each number is the product of its digits.
3. Each square is occupied by a single digit.

 ACROSS                           DOWN

 A 12                             A 36            
 D 63                             B 189
 E 36                             C 21
 G 189                            E 36
 H 98                             F 270 
 K 10                             G 3                       
 L 252                            H 84          
 M 81                             I 14
 N 27                             J 441 
 O 27                             N 8 
 P 21                             O 162     
 Q 48                             P 63       
 R 63

(In reply to possible solution by Ady TZIDON)

I took the time to check it against Charlie's list, and the only issue is O across, 931, which isn't a prime (7*133), but i think the O across clue itself shouldn't be part of the problem, since it messes up the symmetry. :D

Posted by Cristian B. on 2013-09-01 09:09:56