Riesel primes of the form 15•2n-1

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Last update: 2019-03-28


Reserved! This sequence is currently reserved by: Riesel Prime Search

Current data

k-value : 15
Count : 55
Nash : 2221
Max n : 5,500,000
Date : 2018-04-11
Reserved : Riesel Prime SearchRiesel Prime Search/Reserved
1[1], 2[2], 4[3], 5[4], 10[5], 14[6], 17, 31[7], 41, 73, 80, 82, 116, 125, 145, 157, 172, 202, 224, 266, 289, 293, 463, 1004, 1246, 2066, 2431, 2705, 4622, 5270, 7613, 21727, 21962, 40742, 41054, 60622, 83263, 83669, 91457, 103940, 104177, 108124, 115327, 161453, 172714, 454681, 568780, 656264, 712294, 902474, 1084010, 1344313, 1837873, 2323205, 3668194
Remarks :
Forum thread at MersenneForum

Notes

  1. Sophie-Germain, Twin
  2. Sophie-Germain, Twin
  3. Sophie-Germain, Twin
  4. Sophie-Germain
  5. Twin
  6. Near Woodall: (14+1)•214-1
  7. Woodall, 30•230-1