[Puzzle #56]

No zeros occur in this puzzle.

Across:
A: N across + E across
E: a cubic number
F: the reverse of F across is a prime number
H: I across + K down
I: subtract D down from I across, and the result is a square number.
J: a prime number
L: all digits of L across are the same.
N: subtract L across from A across and read the result backwards, and you get N across.

Down:
A: D down multiplied with E across
B: a square number
C: another square number
D: a prime number
G: D down multiplied with the reverse of I across
K: I across - D down
L: a palindrome
M: a prime number

Used with permission. © Rainer Typke.

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