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Riesel primes of the form 28•3n-1

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Current data

k , b : 28 , 3
Count : 37
Nash : 3341
Max n : 300,000
Date : 2024-09-22
1, 2, 4[1], 5, 6[2], 8[3], 12[4], 18[5], 24[6], 49, 64, 76, 110, 125, 138[7], 168[8], 237[9], 593, 1713[10], 2272[11], 5712[12], 7496, 8070[13], 9818, 10677[14], 10801, 13348, 14760[15], 17462, 25852, 30046, 33585[16], 37802, 43490, 133978, 144668, 157612
Remarks :
For additional n ≡ 0 mod 3 history, see Williams 28•27n-1.

Notes

  1. ↑ Twin n=4
  2. ↑ Williams 28•272-1
  3. ↑ Twin n=8
  4. ↑ Williams 28•274-1
  5. ↑ Twin n=18, Williams 28•276-1
  6. ↑ Williams 28•278-1
  7. ↑ Williams 28•2746-1
  8. ↑ Woodall 28•72928-1, Williams 28•2756-1
  9. ↑ Williams 28•2779-1
  10. ↑ Williams 28•27571-1
  11. ↑ Woodall 2268•32268-1
  12. ↑ Williams 28•271904-1
  13. ↑ Williams 28•272690-1
  14. ↑ Williams 28•273559-1
  15. ↑ Williams 28•274920-1
  16. ↑ Williams 28•2711195-1

History

  • 2024-09-22: Checked n = 1 - 300000, Gary Barnes, double-check n = 1 - 75000 only n ≡ 0 mod 3, released
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