Across: A: A square number.
C: B down plus E across.
E: A cubic number.
F: B down is a multiple of F acoss.
G: The addition of E across, F down, and J across.
I: A palindrome.
J: A prime number.
L: A prime number.
N: A prime number.

Down: B: A quartic number.
C: A prime number.
D: A square number.
F: A quintic number.
H: A palindrome.
I: A across plus J across.
K: Subtract J across from I across.
M: A across plus K down.