HP 33s - Manual (Page 143)

Base Conversions and Arithmetic 10–5
Range of Numbers
The 36-bit word size determines the range of numbers that can be represented in
hexadecimal (9 digits), octal (12 digits), and binary bases (36 digits), and the
range of decimal numbers (11 digits) that can be converted to these other bases.
Range of Numbers for Base Conversions
Base Positive Integer
of Largest Magnitude
Negative Integer
of Largest Magnitude
Hexadecimal 7FFFFFFFF 800000000
Octal 377777777777 400000000000
Binary 0111111111111111111111
11111111111111 1000000000000000000000
00000000000000
Decimal 34,359,738,367 –34,359,738,368
When you key in numbers, the calculator will not accept more than the maximum
number of digits for each base. For example, if you attempt to key in a 10–digit
hexadecimal number, digit entry halts and the
¤ annunciator appears.
If a number entered in decimal base is outside the range given above, then it
produces the message !  in the other base modes. In RPN mode, the
original decimal value of any too–big number is used in calculations. Any
operation that results in a number outside the range given above causes
OVERFLOW to be briefly displayed. The display then shows the largest positive or
negative integer representable in the current base. In ALG mode, any operation
(except +/– in the entry line but not in a variable prompt) using ! displays
the
¤ annunciator.