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Proth primes of the form 21•2ⁿ+1

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Revision as of 10:42, 26 July 2021 by Karbon (talk | contribs) (hist 1979)

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Current data

`k` , `b` :	21 , 2
Type :	3
Count :	48
Nash :	2374
Max `n` :	1,860,000
Date :	2020-06-04

1^[1], 4, 5, 7^[2], 9, 12, 16, 17, 41, 124, 128, 129, 187, 209, 276, 313, 397, 899, 1532, 1613, 1969, 2245, 2733, 4585, 4644, 6712, 6981, 13344, 17524, 27124, 29769, 47337, 55828, 91008, 94801, 164901, 179457, 191337, 200568, 220992, 686632, 856865, 1022168, 1240067, 1421741, 1830919, 3065701, 6048861

Notes

↑ Twin n=1
↑ Twin n=7

History

1979: Checked n = 1500 - 4000, Gordon V. Cormack, Hugh C. Williams
1979: Found n = 2733, Gordon V. Cormack, Hugh C. Williams
1979: Found n = 2245, Gordon V. Cormack, Hugh C. Williams
1979: Found n = 1969, Gordon V. Cormack, Hugh C. Williams
1979: Found n = 1613, Gordon V. Cormack, Hugh C. Williams
1979: Found n = 1532, Gordon V. Cormack, Hugh C. Williams

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