723 = 3 x 241.
723 = (1!)! + (2!)! + (3!)! (A059590).
723 = 36 - 6.
723 is 333 in base 15.
723 is the smallest positive number that can be written as a sum of distinct Fibonacci numbers in 25 ways (A013583).
723 is the sum of fifth powers of primes (A122616): 723 = 35 + 15(25).
Source: What's Special About This Number?
No comments:
Post a Comment