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Factorial primes: Difference between revisions
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(simplified Quackery entry) |
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9: 12! - 1 = 479001599
10: 14! - 1 = 87178291199
</pre>
=={{header|Maxima}}==
<syntaxhighlight lang="maxima">
block([i:1,count:0,result:[]],
while count<10 do (if primep(i!-1) or primep(i!+1) then (result:endcons(i,result),count:count+1),i:i+1),
result:map(lambda([x],[x,x!-1,x!+1]),result),
append(map(lambda([x],if primep(x[2]) then [x[1],x[2],"subtracted"]),result),map(lambda([x],if primep(x[3]) then [x[1],x[3],"added"]),result)),
unique(%%),
firstn(%%,10);
</syntaxhighlight>
{{out}}
<pre>
[[1,2,"added"],[2,3,"added"],[3,5,"subtracted"],[3,7,"added"],[4,23,"subtracted"],[6,719,"subtracted"],[7,5039,"subtracted"],[11,39916801,"added"],[12,479001599,"subtracted"],[14,87178291199,"subtracted"]]
</pre>
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