128
(another Prime Pages' Curiosity)
Prime Curios!
Curios: Curios Search:
 
Participate:
+ 128 = 2! + 3! + 5!. [Petersen]

+ 128 + (1 + 2 + 8) is prime. Note that 1 x 2 x 8 divides 128. [Capelle]

+ 128 = phi(1!!)*phi(2!!)*phi(8!!). [Firoozbakht]




Prime Curios! © 1999-2009 (all rights reserved)