154! + 1 is a factorial prime. [Dobb]
154 = prime(1)*prime(5)*prime(4). Note that 154 is the second number with this property. [Firoozbakht]
154 = (1*5*4)*(1+5+4) - ((1*5*4)*(1+5+4)). Note that 154 is the smallest multi-digit number with this property. [Firoozbakht]