pangram (12. 170)

In recreational and trivial mathematics, a pandigital number is value that uses its digits at least once (usually without redundancy), the first of which in base ten radix is 1 023 456 789 (one billion, twenty-three million, four hundred sixty five thousand seven hundred eight nine) and chiefly have applications in fiction and commercial advertising to display a sample credit card or identification document or phone number—reserved in many cases so they are associated with any real individual. The smallest number in Roman numerals is 1444—that is, MCDXLIV. A pandigital number in base thirty-six notation (heexatrigesimal) would use all numbers and all letters—except zero. Despite their non significant nature in terms of maths, they do possess some interesting and unexpected properties, such as the zeroless palindromic pandigital number 12345678987654321 is the square of 111111111—called a repunit—that is a number with only one digit.