Descending primes: Difference between revisions
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<pre>2, 3, 5, 7, 31, 41, 43, 53, 61, 71, 73, 83, 97, 421, 431, 521, 541, 631, 641, 643, 653, 743, 751, 761, 821, 853, 863, 941, 953, 971, 983, 5431, 6421, 6521, 7321, 7541, 7621, 7643, 8431, 8521, 8543, 8641, 8731, 8741, 8753, 8761, 9421, 9431, 9521, 9631, 9643, 9721, 9743, 9851, 9871, 75431, 76421, 76541, 76543, 86531, 87421, 87541, 87631, 87641, 87643, 94321, 96431, 97651, 98321, 98543, 98621, 98641, 98731, 764321, 865321, 876431, 975421, 986543, 987541, 987631, 8764321, 8765321, 9754321, 9875321, 97654321, 98764321, 98765431</pre> |
<pre>2, 3, 5, 7, 31, 41, 43, 53, 61, 71, 73, 83, 97, 421, 431, 521, 541, 631, 641, 643, 653, 743, 751, 761, 821, 853, 863, 941, 953, 971, 983, 5431, 6421, 6521, 7321, 7541, 7621, 7643, 8431, 8521, 8543, 8641, 8731, 8741, 8753, 8761, 9421, 9431, 9521, 9631, 9643, 9721, 9743, 9851, 9871, 75431, 76421, 76541, 76543, 86531, 87421, 87541, 87631, 87641, 87643, 94321, 96431, 97651, 98321, 98543, 98621, 98641, 98731, 764321, 865321, 876431, 975421, 986543, 987541, 987631, 8764321, 8765321, 9754321, 9875321, 97654321, 98764321, 98765431</pre> |
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=={{header|Mathematica}}/{{header|Wolfram Language}}== |
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<lang Mathematica>Sort[Select[FromDigits/@Subsets[Range[9,1,-1],{1,\[Infinity]}],PrimeQ]]</lang> |
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<pre>{2, 3, 5, 7, 31, 41, 43, 53, 61, 71, 73, 83, 97, 421, 431, 521, 541, 631, 641, 643, 653, 743, 751, 761, 821, 853, 863, 941, 953, 971, 983, 5431, 6421, 6521, 7321, 7541, 7621, 7643, 8431, 8521, 8543, 8641, 8731, 8741, 8753, 8761, 9421, 9431, 9521, 9631, 9643, 9721, 9743, 9851, 9871, 75431, 76421, 76541, 76543, 86531, 87421, 87541, 87631, 87641, 87643, 94321, 96431, 97651, 98321, 98543, 98621, 98641, 98731, 764321, 865321, 876431, 975421, 986543, 987541, 987631, 8764321, 8765321, 9754321, 9875321, 97654321, 98764321, 98765431}</pre> |
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=={{header|Perl}}== |
=={{header|Perl}}== |
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