\[Codenumber \left( a \right) \land \\ Divides \left( SS0, a \right) \land \neg Divides \left( SSSS0, a \right) \land \\ \left( \forall y < a \right) \left( \forall z < a \right) \left( \forall k < a ...Codenumber(a)∧Divides(SS0,a)∧¬Divides(SSSS0,a)∧(∀y<a)(∀z<a)(∀k<a)[(Divides(z,a)∧Primepair(y,z))→(Divides(yk,a)↔Divides(zSk,a))].