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Search: id:A139638
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| A139638 |
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Least number k such that k*p(n)*(k*p(n)+1)-1, k*p(n)*(k*p(n)+1)+1, k*p(n)*(k*p(n)+3)-1 and k*p(n)*(k*p(n)+3)+1 are all primes, two pairs of twin primes, with p(i) = i-th prime. |
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| 312, 1, 3, 195, 45, 48, 4884, 732, 3525, 570, 1230, 2244, 930, 15555, 660, 6513, 4656, 228, 2847, 180, 2613, 21, 18, 1176, 2832, 63, 3168, 4500, 12, 4740, 225, 465, 4602, 5940, 25575, 38799, 6939, 4821, 2067, 81, 21090, 9570, 18480, 558, 15762, 34836
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