 
Copyright © 2002 by Rainer Typke
No zero occurs in this puzzle.
Across: A: D down + M across
E: the digit sum of K down multiplied with M across
F: a square number
G: the greatest common divisor of G across and the reverse of H across equals the reverse of J down.
H: a palindrome
I: a prime number
K: a cubic number
M: a palindrome
Down: A: the greatest common divisor of A down and H across equals J down.
B: a prime number
C: both C down and its reverse are prime numbers.
D: M across multiplied with H across
E: A down multiplied with A down's first digit
J: a prime number
K: the reverse of L down
L: L down < F across
