Here are the 17 smallest amicable quintuplets: http://donovanjohnson.com/OEIS/amicable_quintuplets.txt Solutions for: sigma(v) = sigma(w) = sigma(x) = sigma(y) = sigma(z) = v+w+x+y+z There are no other amicable quintuplets with a sigma value < 6*10^11. Donovan