Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. In mathematics, a pandigital number is an integer that in a given base has among its significant digits each digit used in the base at least once. For example, 1223334444555567890 is a pandigital number in base 10. The first few pandigital base 10 numbers are given by (sequence A050278 in OEIS):1023456789, 1023456798, 1023456879, 1023456897, 1023456978, 1023456987, 1023457689The smallest pandigital number in a given base b is an integer of the form The following table lists the smallest pandigital numbers of a few selected bases: