256 p in the pound?
Not sure about that, but in the dim and distant I worked for a large Life Assurance company which still had many policies in force that went back decades before decimalisation. Obviously impossible to accurately convert 2s. 11½d. to decimal, so every financial amount was converted into farthings (960 to the pound) and stored as an integer. Only finally converted to decimal currency when it became necessary to make a payout.