Yes, both.
No.
No.
Yes
no
yes
Yes: 33,015 / 5 = 6,603
3, yes; 2, no
1, 3, 5, 15, 31, 71, 93, 155, 213, 355, 465, 1065, 2201, 6603, 11005, 33015.
1, 3, 5, 15, 31, 71, 93, 155, 213, 355, 465, 1065, 2201, 6603, 11005, 33015.
Yes 33015/3 is 11005. Here's a tip: if the digits of number add up to a multiple of three, then that number is also a multiple of three.
1, 3, 5, 15, 31, 71, 93, 155, 213, 355, 465, 1065, 2201, 6603, 11005, 33015