Used with permission. Copyright © Rainer Typke [www.crossnumber.com]
No zeros occur in this puzzle.
B: a cubic number.
D: all digits of D across are the same.
E: D across - B across.
G: M across / B down.
H: the reverse of E across.
I: a prime number.
K: the seventh power of some number.
M: the digit sum of M across equals G across.
A: K across - J down.
B: a prime number whose reverse is a square number.
C: a palindrome.
D: all digits of D down are the same.
F: C down * I across.
J: a palindrome.
K: a prime number.
L: a palindrome.