==Examples==The first few deficient numbers are::1, 2, 3, 4, 5, 7, 8, 9, 10, 11, 13, 14, 15, 16, 17, 19, 21, 22, 23, 25, 26, 27, …As an example, consider the number 21.
- 1 da število 523022617466601111760007224100074291199999999, ki je šestnajsto fakultetno praštevilo.