Used with permission. Copyright © Rainer Typke [www.crossnumber.com]
No zeros occur in this puzzle.
A: a palindrome.
C: a palindrome.
E: divide this palindrome by C across, and the result equals four times the digit product of P down.
G: 4 times N down.
J: a prime number.
L: J down + K down.
M: the third power of A down.
N: if this palindrome is divided by A across, the result is another palindrome.
P: P across divided by T across equals the digit sum of P across.
Q: a prime number.
S: S across divided by O down is a prime number.
T: a prime number.
U: this prime number is a divisor of J down.
A: a cubic number.
B: C down minus the reverse of G across.
C: a prime number.
D: the reverse of the prime number D down divided by the digit sum of C across is a square number.
F: the third power of A across.
H: H down divided by D down equals N across divided by A across.
I: I across divided by Q across equals half the digit product of P down.
J: a palindrome.
K: K down divided by J across equals the digit sum of J down.
N: a prime number.
O: a prime number.
P: the digit product of A across multiplied with the digit product of N across.
R: this palindrome equals C across plus T across.