%0 Journal Article %A Jin, Qiao-Xiao %A Tang, Min %T The 4-Nicol numbers having five different prime divisors %J Journal of integer sequences %D 2011 %V 14 %N 7 %I mathdoc %U http://geodesic.mathdoc.fr/item/JIS_2011__14_7_a6/ %G en %F JIS_2011__14_7_a6