A098113 Numbers n such that n=(d_1+2)*(d_2+2)*...*(d_k+2) where d_1 d_2 ... d_k is the decimal expansion of n.

12, 24, 35, 56

Offset: 1

Author

Farideh Firoozbakht, Sep 24 2004

Keywords

• base
• nonn
• more
• hard

Comments

It seems that there are no further terms.

No other terms below 10^150. - Max Alekseyev, Jan 25 2015

Examples

			56 is in the sequence because 56=(5+2)*(6+2).
		

Crossrefs

Cf. A098114, A097371, A097372.

Programs

Mathematica

Do[d=IntegerDigits[n];k=Length[d];If[n==Product[d[[j]]+2, {j, k}], Print[n]], {n, 10000000}]