Perfect numbers: Difference between revisions
Content added Content deleted
| Line 2,820: | Line 2,820: | ||
=={{header|PARI/GP}}== |
=={{header|PARI/GP}}== |
||
===Using built-in method=== |
===Using built-in method=== |
||
<syntaxhighlight lang="parigp" |
<syntaxhighlight lang="parigp"> |
||
isPerfect(n)=sigma(n,-1)==2 |
|||
</syntaxhighlight> |
|||
or |
|||
<syntaxhighlight lang="parigp"> |
|||
isPerfect(n)=sigma(n)==2*n |
|||
</syntaxhighlight> |
|||
Show perfect numbers |
Show perfect numbers |
||
<syntaxhighlight lang="parigp"> |
<syntaxhighlight lang="parigp"> |
||