HP -32S Owner's Manual page 287

TOO BIG
The magnitude of the number is too large to be converted to HEX,
OCT, or BIN base. The number must be in the range
-34,359,738,368 < n < 34,359,738,367.
XEQ OVERFLOW
A running program attempted an eighth nested XEQ label. (Up to
seven subroutines can be nested.) Since SOLVE and /FN each use a
level, they can also generate this error.
Messages 285