Factorions
...an interesting little math tidbit. A factorion is an integer which is equal to the sum of factorials of its digits. There are exactly four such numbers.
145 = 1! + 4! + 5!
heh. :-)
...an interesting little math tidbit. A factorion is an integer which is equal to the sum of factorials of its digits. There are exactly four such numbers.
145 = 1! + 4! + 5!
heh. :-)
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