1,131
29 x 39 = 1,521 (square feet).
68
1 x 2262, 2 x 1131, 3 x 754, 6 x 377, 13 x 174, 26 x 87, 29 x 78, 39 x 58, 58 x 39, 78 x 29, 87 x 26, 174 x 13, 377 x 6, 754 x 3, 1131 x 2, 2262 x 1
29 is prime but 39 is composite
0 x 39 = 0 1 x 39 = 39 2 x 39 = 78 3 x 39 = 117 4 x 39 = 156 5 x 39 = 195 6 x 39 = 234 7 x 39 = 273 8 x 39 = 312 9 x 39 = 351 10 x 39 = 390
29 & 59
39 = 1 x 39, 3 x 13, 13 x 3, 39 x 1.
It means that 29 of the 39 clues are currently available.
x=3 (39)(x) = (39)(3) = 117
(39 x 26) + (39 x 13) = 39 x 39 = 1521
2 x 3 x 5 = 30
2 x 3 x 5 = 30