Repunit primes: Difference between revisions
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Base 36: 2 |
Base 36: 2 |
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</pre> |
</pre> |
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=={{header|Python}}== |
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<lang python>from sympy import isprime |
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for b in range(2, 17): |
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print(b, [n for n in range(2, 1001) if isprime(n) and isprime(int('1'*n, base=b))])</lang> |
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{{out}} |
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<pre>2 [2, 3, 5, 7, 13, 17, 19, 31, 61, 89, 107, 127, 521, 607] |
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3 [3, 7, 13, 71, 103, 541] |
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4 [2] |
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5 [3, 7, 11, 13, 47, 127, 149, 181, 619, 929] |
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6 [2, 3, 7, 29, 71, 127, 271, 509] |
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7 [5, 13, 131, 149] |
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8 [3] |
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9 [] |
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10 [2, 19, 23, 317] |
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11 [17, 19, 73, 139, 907] |
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12 [2, 3, 5, 19, 97, 109, 317, 353, 701] |
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13 [5, 7, 137, 283, 883, 991] |
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14 [3, 7, 19, 31, 41] |
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15 [3, 43, 73, 487] |
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16 [2]</pre> |
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=={{header|Raku}}== |
=={{header|Raku}}== |