alaadade alawwaliya

hasba attaarife almotadawele fainna:
alaadade alawwali howa alaadade alladhé yaqbile alqisma ala nafssihé wa ala alwahéde.
hasba attaarife fainna:
alaadade alawwaliya=almagmoua dhate alonssore 2 éttihade baade alaadade alfardiya.

amthéla:
2,3,5,7,11,13,17,19,23,29.......
[size=18]benabderrahmane abderahmane[/size]