Problema al generar primos en Delphi

[Victor Luis]

Holas Amigo Nelson...

Pues el 1º Dato que debia controlar al pasar del billon esta bien, busque en un rango de mil millones osea hasta 1.001.000.000.000 y todos los encontrados son primos, aqui dejo los ultimos 100 antes de este limite:

1.000.999.997.341 1.000.999.997.357 1.000.999.997.369 1.000.999.997.449 1.000.999.997.471 1.000.999.997.479 1.000.999.997.507 1.000.999.997.521 1.000.999.997.533 1.000.999.997.537 1.000.999.997.579 1.000.999.997.597 1.000.999.997.629 1.000.999.997.633 1.000.999.997.689 1.000.999.997.693 1.000.999.997.737 1.000.999.997.743 1.000.999.997.749 1.000.999.997.761 1.000.999.997.797 1.000.999.997.807 1.000.999.997.929 1.000.999.997.941 1.000.999.997.951 1.000.999.997.981 1.000.999.998.023 1.000.999.998.043 1.000.999.998.169 1.000.999.998.191 1.000.999.998.203 1.000.999.998.287 1.000.999.998.319 1.000.999.998.391 1.000.999.998.409 1.000.999.998.413 1.000.999.998.463 1.000.999.998.473 1.000.999.998.499 1.000.999.998.517 1.000.999.998.521 1.000.999.998.527 1.000.999.998.529 1.000.999.998.539 1.000.999.998.613 1.000.999.998.619 1.000.999.998.641 1.000.999.998.643 1.000.999.998.697 1.000.999.998.731 1.000.999.998.751 1.000.999.998.787 1.000.999.998.827 1.000.999.998.829 1.000.999.998.839 1.000.999.998.857 1.000.999.998.941 1.000.999.998.983 1.000.999.998.991 1.000.999.998.997 1.000.999.999.009 1.000.999.999.033 1.000.999.999.067 1.000.999.999.123 1.000.999.999.133 1.000.999.999.163 1.000.999.999.189 1.000.999.999.201 1.000.999.999.217 1.000.999.999.271 1.000.999.999.303 1.000.999.999.343 1.000.999.999.357 1.000.999.999.361 1.000.999.999.421 1.000.999.999.427 1.000.999.999.471 1.000.999.999.501 1.000.999.999.513 1.000.999.999.541 1.000.999.999.547 1.000.999.999.579 1.000.999.999.613 1.000.999.999.619 1.000.999.999.621 1.000.999.999.627 1.000.999.999.631 1.000.999.999.679 1.000.999.999.693 1.000.999.999.711 1.000.999.999.729 1.000.999.999.799 1.000.999.999.871 1.000.999.999.873 1.000.999.999.877 1.000.999.999.889 1.000.999.999.897 1.000.999.999.913 1.000.999.999.943 1.001.000.000.017