Concatenate two primes is also prime: Difference between revisions
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[8311,8317,8329,8353,8389,8923,8929,8941,8971,9719,9743,9767] |
[8311,8317,8329,8353,8389,8923,8929,8941,8971,9719,9743,9767] |
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</pre> |
</pre> |
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=={{header|J}}== |
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<syntaxhighlight lang="j"> concat =. ((* 10 ^ #@":) + ])"0 |
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_12 ]\ /:~ (#~ 1&p:) , concat/~ p: i. _1 p: 100 |
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23 37 53 73 113 137 173 193 197 211 223 229 |
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233 241 271 283 293 311 313 313 317 317 331 337 |
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347 353 359 367 373 373 379 383 389 397 433 523 |
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541 547 571 593 613 617 673 677 719 733 743 761 |
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773 797 797 977 1117 1123 1129 1153 1171 1319 1361 1367 |
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1373 1723 1741 1747 1753 1759 1783 1789 1913 1931 1973 1979 |
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1997 2311 2341 2347 2371 2383 2389 2917 2953 2971 3119 3137 |
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3167 3719 3761 3767 3779 3797 4111 4129 4153 4159 4337 4373 |
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4397 4723 4729 4759 4783 4789 5323 5347 5923 5953 6113 6131 |
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6143 6173 6197 6719 6737 6761 6779 7129 7159 7331 7919 7937 |
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8311 8317 8329 8353 8389 8923 8929 8941 8971 9719 9743 9767</syntaxhighlight> |
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=={{header|jq}}== |
=={{header|jq}}== |
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