numere prime 1.2.3.7.11,......
a=1, 7*1+16b=94, 16b=87, b=87/16 nu e prim
a=2, 7*2+16b=94, 16b=80, b=80/5=16 nu e prim
a=3, 7*3+16b=94, 16b=73, b=76/16 nu e prim
a=5, 7*5+16b=94, 16b=59, b=59/16 nu e prim
a=7, 7*7+16b=94, 16b=45, b=45/16, nu e prim
a=11, 7*11+16b=94, 16b=17, b=17/16 nu e prim
a=13, 7*13+16b=94, 16b=3
b=1, 7a+16=94, 7a=78, a=78/7 nu e prim
b=2, 7a+16*2=94, 7a=62. a=62/7 nu eprim
b=3, 7a+16*3=94, 7a=46, a=46/7 nu e prim
b=5, 7a+16*5=94, 7a=14, a=2
b=7, 7a+16*7=94, 7a=-18 nu se poate trebuie sa fie poz.