Giuga numbers: Difference between revisions

m
Line 135:
=== Ad hoc faster version ===
<lang ruby>using Primes
 
isGiuga(n) = all(f -> f != n && rem(n ÷ f - 1, f) == 0, factor(Vector, n))
 
function getgiugas(numberwanted, verbose = true)
4,108

edits