Near Generalized Woodall primes of the form `(n+1)`•2ⁿ-1

Current data

ASCII format :	(n+1)*2^n-1
Base :	2
Count :	33
Max `n` :	2,000,000
Date :	2015-05-01

1^[1], 2^[2], 3^[3], 4^[4], 5^[5], 9^[6], 14^[7], 15^[8], 16^[9], 27^[10], 45^[11], 122^[12], 125^[13], 213^[14], 242^[15], 256^[16], 263^[17], 290^[18], 855^[19], 1059^[20], 2273^[21], 3945^[22], 3999^[23], 9512^[24], 14127^[25], 16486^[26], 20056^[27], 28834^[28], 41493^[29], 159147^[30], 227139^[31], 587823^[32], 3986381^[33]

Remarks :

The sequence A230769 in OEIS
See additional history at Near-Cullen & Near-Woodall primes
For additional odd n history, see Woodall n•4ⁿ-1.

Notes

History

2015-05-01: Checked n = 2000000 - 4000000 only odd n, Serge Batalov from Woodall n•4ⁿ-1
2015-05-01: Found n = 3986381, Serge Batalov
2014-11-12: Checked n = 1896000 - 2000000, Steven Harvey
2014-10-27: Checked n = 1866000 - 1896000, Steven Harvey
2014-10-10: Checked n = 1747000 - 1866000, Steven Harvey
2014-08-15: Checked n = 1720000 - 1747000, Steven Harvey
2014-07-29: Checked n = 1678000 - 1720000, Steven Harvey
2014-07-10: Checked n = 1630000 - 1678000, Steven Harvey
2014-06-03: Checked n = 1100000 - 1630000, Steven Harvey
2012-06-01: Checked to n = 1100000, Steven Harvey
2009-09-11: Found n = 587823, Steven Harvey
2000-07-28: Found n = 227139, Ray Ballinger
2000-05-19: Found n = 159147, Ray Ballinger
1998-07-03: Found n = 41493, Henri Lifchitz
1998-07-03: Found n = 28834, Henri Lifchitz
1998-07-03: Found n = 20056, Henri Lifchitz
1998-07-03: Found n = 16486, Henri Lifchitz
1998-07-03: Found n = 14127, Henri Lifchitz
1998-07-03: Found n = 3999, Henri Lifchitz
1998-07-03: Found n = 3945, Henri Lifchitz

[1] Twin n=1, Mersenne 2²-1, Woodall 4¹-1

[2] Twin n=2, Riesel 3•2²-1

[3] Mersenne 2⁵-1, Woodall 2•4²-1

[4] Riesel 5•2⁴-1

[5] Twin n=5, Riesel 3•2⁶-1, Woodall 3•4³-1

[6] Riesel 5•2¹⁰-1, Woodall 5•4⁵-1

[7] Riesel 15•2¹⁴-1

[8] Mersenne 2¹⁹-1, Woodall 8•4⁸-1

[9] Riesel 17•2¹⁶-1

[10] Riesel 7•2²⁹-1, Woodall 14•4¹⁴-1

[11] Riesel 23•2⁴⁶-1, Woodall 23•4²³-1

[12] Riesel 123•2¹²²-1

[13] Riesel 63•2¹²⁶-1, Woodall 63•4⁶³-1

[14] Riesel 107•2²¹⁴-1, Woodall 107•4¹⁰⁷-1

[15] Riesel 243•2²⁴²-1

[16] Riesel 257•2²⁵⁶-1

[17] Riesel 33•2²⁶⁶-1, Woodall 132•4¹³²-1

[18] Riesel 291•2²⁹⁰-1

[19] Riesel 107•2⁸⁵⁸-1, Woodall 428•4⁴²⁸-1

[20] Riesel 265•2¹⁰⁶¹-1, Woodall 530•4⁵³⁰-1

[21] Riesel 1137•2²²⁷⁴-1, Woodall 1137•4¹¹³⁷-1

[22] Riesel 1973•2³⁹⁴⁶-1, Woodall 1973•4¹⁹⁷³-1

[23] Riesel 125•2⁴⁰⁰⁴-1, Woodall 2000•4²⁰⁰⁰-1

[24] Riesel 9513•2⁹⁵¹²-1

[25] Riesel 883•2¹⁴¹³¹-1, Woodall 7064•4⁷⁰⁶⁴-1

[26] Riesel 16487•2¹⁶⁴⁸⁶-1

[27] Riesel 20057•2²⁰⁰⁵⁶-1

[28] Riesel 28835•2²⁸⁸³⁴-1

[29] Riesel 20747•2⁴¹⁴⁹⁴-1, Woodall 20747•4²⁰⁷⁴⁷-1

[30] Riesel 39787•2¹⁵⁹¹⁴⁹-1, Woodall 79574•4⁷⁹⁵⁷⁴-1

[31] Riesel 56785•2²²⁷¹⁴¹-1, Woodall 113570•4¹¹³⁵⁷⁰-1

[32] Riesel 36739•2⁵⁸⁷⁸²⁷-1, Woodall 293912•4²⁹³⁹¹²-1

[33] Riesel 1993191•2^3986382-1, Woodall 1993191•4^1993191-1

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Near Generalized Woodall primes of the form `(n+1)`•2ⁿ-1

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Near Generalized Woodall primes of the form (n+1)•2n-1

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Near Generalized Woodall primes of the form `(n+1)`•2ⁿ-1