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Old 2018-05-03, 17:51   #67
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k=2 and k=4 @ base=3 tested till n=1.72M
127*128^n-1 tested till n=1.8M
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Old 2018-09-02, 00:35   #68
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k=2 and k=4 @ base=3 tested till n=1.76M
127*128^n-1 tested till n=1.86M
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Old 2018-11-01, 12:37   #69
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k=2 and k=4 @ base=3 tested till n=1.78M
127*128^n-1 tested till n=1.88M
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Old 2018-11-30, 23:31   #70
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k=2 and k=4 @ base=3 tested till n=1.8M
127*128^n-1 tested till n=1.88M
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Old 2019-01-01, 15:39   #71
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k=2 and k=4 @ base=3 tested till n=1.81M
127*128^n-1 tested till n=1.93M
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Old 2019-03-01, 19:15   #72
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k=2 and k=4 @ base=3 tested till n=1.84M
127*128^n-1 tested till n=1.95M
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Old 2019-04-14, 17:28   #73
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Made pages for 2*3^n-1 and 4*3^n-1 in the PrimeWiki, S.Harvey is aware of these, too.
For k=4 I've not included n=0 as in the OEIS-entry.
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Old 2019-09-05, 13:17   #74
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k=2 and k=4 @ base=3 tested till n=1.93M
127*128^n-1 tested till n=2.07M
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Old 2019-10-05, 17:28   #75
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k=2 and k=4 @ base=3 tested till n=1.94M
127*128^n-1 tested till n=2.08M
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Old 2020-01-03, 20:42   #76
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k=2 and k=4 @ base=3 tested till n=2M (sieving)
127*128^n-1 tested till n=2.15M
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Old 2020-04-04, 00:20   #77
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k=2 and k=4 @ base=3 tested till n=2M (sieving)
127*128^n-1 tested till n=2.22M
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