three, four, etc. digits long

Examples (10)

• The number can be up to eight digits long.
• This password must be at least six digits long.
• The account number is exactly nine digits long.
• Social security numbers are always nine digits long.
• The verification code should be four digits long.
• Phone numbers in this country are ten digits long.
• The product code must be between five and seven digits long.
• Credit card numbers are typically sixteen digits long.
• The serial number is twelve digits long.
• Bank routing numbers are exactly nine digits long.