THEOR. CIRCA DU^ISORES NFMER. cet. 155 



52W-H I 54 wH- 7 



5 2 ;// -i- 49 5 2 w -f- 3 1 



5 2 ?« -f- 9 5 2 w/ -}- I I 



$im-\-z$ 52«/H-i9 



52w-f-29 5 2 7« H- 47 



Sim~{-i^ $2fji-{-is 



Theorema 20. 



Omnes numeri primi , qui in priori fbrmularum iflanina 

 cokimna continentiir , fimul funt numcri huius formac 

 aa-\-i:il>lf. Numerorum autem primorum , qui in al- 

 tera fbrmuJarum columna continentur, dupla funt uumcri 

 formae aa-{-i:idl>. 



Theorema 21. 



NuUus numems huius formae aa-i-ii^l;^ diuidi potefl 

 per Tllum numerum, qui contineatur in vna fequentium 

 formularum 



5a;»-h 3 5i'»-i-35 



S^m-{- 5 52;«-f-37 



52;«-f-2i 52///-J-41 



Szm-\-23 52;«-h43 



52;;/-^-27 5 2;«-}- 45 



52^«-i-33 52^»-f-5i 



Theorema 22. 



Numerorum in hac forma aa-\-i^bb contentorum om- 

 oes diuifores primi funt vel a vel 17 vel in vna fequen- 

 tium formularum continentur. 



