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Proth primes of the form 2•3n+1

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Current data

k , b : 2 , 3
Count : 45
Nash : 2729
Max n : 0
Date : 2020-02-14
1[1], 2, 4, 5[2], 6, 9[3], 16, 17[4], 30, 54, 57[5], 60, 65[6], 132, 180, 320, 696, 782, 822, 897[7], 1252, 1454, 4217[8], 5480, 6225[9], 7842, 12096, 13782, 17720, 43956, 64822, 82780, 105106, 152529[10], 165896, 191814, 529680, 1074726, 1086112, 1175232, 1277862, 1346542, 3123036, 3648969[11], 5570081[12]
Remarks :
The sequence A003306 in OEIS
No reliable search limit available!

Notes

  1. Divides Phi(3^1,2)
  2. Divides Phi(3^5,2)
  3. Divides Phi(3^7,2)
  4. Divides Phi(3^15,2)
  5. Divides Phi(3^56,2), Cullen 54•354+1
  6. Divides Phi(3^65,2)
  7. Divides Phi(3^896,2)
  8. Divides Phi(3^4217,2)
  9. Divides Phi(3^6223,2)
  10. Divides Phi(3^152528,2)
  11. Divides Phi(3^3648964,2)
  12. Divides Phi(3^5570081,2)

History