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Riesel primes of the form 15•2n-1

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

Current data

k , b : 15 , 2
Type : 315
Count : 57
Nash : 2221
Max n : 6,134,000
Date : 2021-11-22
Reserved : Riesel Prime SearchRiesel Prime Search/Reserved
1[1], 2[2], 4[3], 5, 10[4], 14[5], 17, 31[6], 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, 6429089, 6993631
Remarks :
Forum thread at MersenneForum
The sequence A002237 in OEIS

Notes

  1. ↑ Sophie Germain n=1, Twin n=1
  2. ↑ Twin n=2
  3. ↑ Sophie Germain n=4, Twin n=4
  4. ↑ Twin n=10
  5. ↑ Near Woodall 15•214-1
  6. ↑ Woodall, Woodall 30•230-1

History

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