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Williams primes of the form 2•3n-1

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Reserved! This sequence is currently reserved by: Borys Jaworski
Last update: 2019-04-14
Reserved! This sequence is currently reserved by: Borys Jaworski

Current data

Base : 3
Count : 37
Max n : 1,840,000
Date : 2019-03-01
Reserved : Borys JaworskiBorys Jaworski/Reserved
1, 2, 3, 7, 8, 12, 20, 23, 27, 35, 56, 62, 68, 131, 222, 384, 387, 579, 644, 1772, 3751, 5270, 6335, 8544, 9204, 12312, 18806, 21114, 49340, 75551, 90012, 128295, 143552, 147488, 1010743, 1063844, 1360104

History

  • 2015-07-31: Found n = 1360104, Borys Jaworski, Riesel Prime Search
  • 2012-02-12: Found n = 1063844, Borys Jaworski, Riesel Prime Search
  • 2011-09-01: Found n = 1010743, Borys Jaworski, Riesel Prime Search
  • 2004-08-15: Found n = 147488, Ingo Buechel, Wilfrid Keller
  • 2004-08-12: Found n = 143552, Ingo Buechel, Wilfrid Keller
  • 2003-06-20: Found n = 128295, Ingo Buechel, Wilfrid Keller
  • 2001-09-28: Found n = 90012, Wilfrid Keller
  • 2001-08-12: Found n = 75551, Wilfrid Keller
  • 2001-06-30: Found n = 49340, Wilfrid Keller
  • 1972: Found n = 1 ... 222, H.C.Williams, C.R.Zarnke

External links