ni11x11SupposethatSfp1p2pkgisasetofalltheprimesThensincen60ifandonlyifn1ornisaproductofcertaindistinctelementsofStakingxp1p2pk1into1iteasilyreducesto1kkXs11ksX ID: 107797
ni=1(1x+1):(1)SupposethatS=fp1;p2;:::;pkgisasetofalltheprimes.Thensince(n)6=0ifandonlyifn=1ornisaproductofcertain(distinct)elementsofS takingx=p1p2pk+1into(1)