The UNIVAC 1103A had up to 12,288 words of 36 bit magnetic core memory, in one to three banks of 4,096 words each.
Fixed point numbers had a 1 bit sign and a 35 bit value, with negative values represented in one's complement format.
Floating point numbers had a 1 bit sign, an 8 bit characteristic, and a 27 bit mantissa.
Instructions had a 6 bit operation code and two 15-bit operand addresses.