### Factorion A factorion is a natural number that equals the sum of the factorials of its decimal digits. For example, 145 is a factorion because 1! + 4! + 5! = 1 + 24 + 120 = 145. There are just four factorions (in base 10) and they are 1, 2, 145 and 40585 {OEIS|id=A014080}. ==Upper bound== If n is a natural number of d digits that is a factorion, then 10d
Found on http://en.wikipedia.org/wiki/Factorion

### factorion A natural number that equals of the sums of the factorials of its digits in a given base. The only known decimal factorions are 1 = 1!, 2 = 2!, 145 = 1! + 4! + 5!, and 40585 = 4! + 0! + 5! + 8! + 5!.
Found on http://www.daviddarling.info/encyclopedia/F/factorion.html

### factorion A natural number that equals of the sums of the factorials of its digits in a given base. The only known decimal factorions are 1 = 1!, 2 = 2!, 145 = 1! + 4! + 5!, and 40585 = 4! + 0! + 5! + 8! + 5!.
Found on http://www.daviddarling.info/encyclopedia/F/floor_function.html
No exact match found