Generalized Woodall primes of the form `n`•27ⁿ-1

Current data

10^[1], 18^[2], 20^[3], 2420^[4], 6638^[5], 11368^[6], 14040^[7], 103444^[8]

2024-10-25: Checked n = 1 - 100000, Gary Barnes, double-check, released
2023-07-23: Checked n = 4000 - 40000?, (puadz), double-check
2023-07-03: Reserved by (puadz), double-check
2014-03-13: Checked to n = 25000, Steven Harvey, double-check
2012-12-04: Checked n = 400000 - 450000, Thomas Ritschel
2012-03-22: Checked n = 300000 - 400000, Predrag Minovic, Thomas Ritschel
2012-01-11: Checked n = 200000 - 300000, Predrag Minovic, Thomas Ritschel
2011-11-27: Reserved by Thomas Ritschel
2011-07-11: Checked n = 125000 - 200000, Steven Harvey
2011-05-19: Reserved by Steven Harvey for n = 125000 - 200000
2010-11-01: Checked n = 26 - 4000, Steven Harvey, double-check
2009-10-26: Checked n = 40000? - 125000, Steven Harvey
2009-10-19: Found n = 103444, Steven Harvey
2009-10-04: Reserved by Steven Harvey to n = 125000
2005-01-03: Checked n = 5000 - 10000, Mark Rodenkirch
2004-12-21: Reserved by Mark Rodenkirch to n = 10000
2004-12-21: Checked n = 26 - 5000, Mark Rodenkirch
2004-12-15: Reserved by Mark Rodenkirch to n = 6000
2004-12-03: Reserved by Mark Rodenkirch to n = 5000
2002-10: Found n = 14040, Steven Harvey
2002-10: Found n = 11368, Steven Harvey
2000-02-21: Found n = 6638, Joe DeMaio
2000-02-04: Found n = 2420, Joe DeMaio