154

This number is a composite.

+ 154 is the largest maximal gap under 10 million. [Russ]

+ 154! + 1 is a factorial prime. [Dobb]

+ 154 = (1*5*4)*(1+5+4) - π((1*5*4)*(1+5+4)). Note that 154 is the smallest multi-digit number with this property. [Firoozbakht]

(There are 2 curios for this number that have not yet been approved by an editor.)

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