The check digit is used to confirm the initial digits of the card number. The benefits of using a checksum is that it prevents casual attempts to invent credit card numbers, as only one in ten will be valid.
Length (adj). the longest, or longer, dimension of any object, in distinction from breadth or width; extent of anything from end to end; the longest line which can be drawn through a body, parallel to its sides; as, the length of a church, or of a ship; the length of a rope or line.
Rating Newest Oldest. Best Answer: The longest authentically recorded penis measured an impressive 30 cm (12 in) when erect, and was 5.5 cm (2.25 in) in diameter. A penis measuring 35 cm (14 in) when erect was described in Everything You Always Wanted to Know about Sex by Dr David Reuben, but no source was quoted. It would seem that the longest penises average somewhere between 25 cm and 30 cm.