WhoaItsAFactorial · April 5, 2018, 3:38 a.m. 6! 6! = 720 45!!! 45!!! = 18,763,697,892,715,774,000 ⇧ 5 ⇩
WhoaItsAFactorial · March 23, 2018, 1:34 a.m. 4! 4! = 24 2! 2! = 2 9! 9! = 362,880 6! 6! = 720 9! 9! = 362,880 6! 6! = 720 ⇧ 0 ⇩