The greatest value a digit can have in base for is 3. Thus the largest three-digit number in base for would be 333. In base 10, this number is 3x16 + 3x4 + 3 = 63 Therefore 63 is the largest digit that would be three digits in base 4.
BBB, which is 123-1 = 1728-1 = 1727 in base 10.
BBB which, in decimal, is equal to 1727 (= 123 - 1)
You have to specify the base. For example, in base-16, otherwise known as hexadecimal or hex, the greatest 5 digit number is FFFFF.
A three digit number cannot be divisible by a 5 digit number - in any base.
1112 which, in decimal, is 7
The largest 3-digit number in base 3 is 222. Its decimal equivalent is 26
5037 = 248 = 3059
Not in a way that would be generally understood. However, it is possible. An 8-digit number in base 10 can be represented by a 5-digit number in base 32. For example, extending the scheme for labeling digits for base 32, VVVVV32 = 3355443110 Similarly, the 8-digit number 33333333 in base 4 is the 5-digit number 65535 in base 10
666 - which in base 10 would be 294+42+8=344