Across
1. All digits are odd and all are different.
5. Sum of the digits is half the cube root of 3 down.
6. A prime number.
8. This number is three times the sum of its digits.
9. This number reversed is the square of an even number.
11. Is the same number when reversed and is divisible by 9.
1. All digits are odd and all are different.
5. Sum of the digits is half the cube root of 3 down.
6. A prime number.
8. This number is three times the sum of its digits.
9. This number reversed is the square of an even number.
11. Is the same number when reversed and is divisible by 9.
Down
1. First three digits are the first three digits of 4 down rearranged.
2. A prime number.
3. A perfect cube.
4. Each digit is greater than the preceding one.
7. A multiple of 8 across.
10. The sum of the digits is the square of a perfect square.
1. First three digits are the first three digits of 4 down rearranged.
2. A prime number.
3. A perfect cube.
4. Each digit is greater than the preceding one.
7. A multiple of 8 across.
10. The sum of the digits is the square of a perfect square.
(Note: There are no zeros in any of the cells.)
N.B.
512 = 83
784 = 282
189 = 7 · 27
7 + 9 = 16 = 42