154 THEOR. CIRCA DiriSORES NVMER. ce$ 



Thcorcma i/. 



Si fucrint numcri in his finc dcccm fuic quinquc formuUl 

 contcnti primi , tum fimul crunt vcl ipfi vcl corum qiu- 

 dmpli numcri huius formac aa-{-iil;l;. 



Thcorcma i8. 



Kullus nnmcms hulus formne <7tf-f- ii/;/i'potcfl diuidi pcff 

 ■rtlum numcrum , qui contincatur in vna fcqucntium 



Thcorcma 19. 



Kumcronim in h;ic forma aa-\-x:^bh contcntorum omncft 

 duiilorcs primi funt vcl 2 vcl 13 vcl contincutur in vna 

 icqucntium 12 formularuni. 



52 r« 



