Equal prime and composite sums: Difference between revisions
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(→{{header|Wren}}: Added a further series term.) |
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=={{header|Wren}}== |
=={{header|Wren}}== |
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Takes around 2 minutes, which is respectable for Wren, but uses a lot of memory. |
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<lang ecmascript>import "./math" for Int |
<lang ecmascript>import "./math" for Int |
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import "./sort" for Find |
import "./sort" for Find |
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import "/fmt" for Fmt |
import "/fmt" for Fmt |
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var limit = 1e8 |
var limit = 4 * 1e8 |
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var c = Int.primeSieve(limit - 1, false) |
var c = Int.primeSieve(limit - 1, false) |
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var compSums = [] |
var compSums = [] |
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} |
} |
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} |
} |
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for (i in 0...primeSums.count) { |
for (i in 0...primeSums.count) { |
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var ix |
var ix |
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if ((ix = Find.first(compSums, primeSums[i])) >= 0) { |
if ((ix = Find.first(compSums, primeSums[i])) >= 0) { |
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Fmt.print("$, |
Fmt.print("$,21d - $,12r prime sum, $,12r composite sum", primeSums[i], i+1, ix+1) |
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} |
} |
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}</lang> |
}</lang> |
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{{out}} |
{{out}} |
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<pre> |
<pre> |
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10 - 3rd prime sum, |
10 - 3rd prime sum, 2nd composite sum |
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1,988 - 33rd prime sum, |
1,988 - 33rd prime sum, 51st composite sum |
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14,697 - 80th prime sum, |
14,697 - 80th prime sum, 147th composite sum |
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83,292 - 175th prime sum, |
83,292 - 175th prime sum, 361st composite sum |
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1,503,397 - 660th prime sum, |
1,503,397 - 660th prime sum, 1,582nd composite sum |
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18,859,052 - 2,143rd prime sum, |
18,859,052 - 2,143rd prime sum, 5,699th composite sum |
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93,952,013 - 4,556th prime sum, |
93,952,013 - 4,556th prime sum, 12,821st composite sum |
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89,171,409,882 - 118,785th prime sum, |
89,171,409,882 - 118,785th prime sum, 403,341st composite sum |
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9,646,383,703,961 - 1,131,142nd prime sum, |
9,646,383,703,961 - 1,131,142nd prime sum, 4,229,425th composite sum |
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209,456,854,921,713 - 5,012,372nd prime sum, |
209,456,854,921,713 - 5,012,372nd prime sum, 19,786,181st composite sum |
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3,950,430,820,867,201 - 20,840,220th prime sum, 86,192,660th composite sum |
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</pre> |
</pre> |
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