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RPS Megabit Drive 2

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Purpose

The goal of this drive is to search for primes of the form k•2n-1 for k ≤ 300 and n > 1000000.

Started

  • 2011-04-28

Ended

  • 2022-04-10

k-values

2011-04-28: k = 115, 117, 123, 129, 135, 147, 149, 153, 155, 157, 159, 171, 173, 175, 179, 183, 185, 189, 193 for 1,000,000 ≤ n ≤ 1,100,000
2011-06-03: extending all k for n > 1,100,000
2015-06-19: adding k = 131, 133, 137, 139, 141, 143, 145, 161, 177, 181, 187 for n > 2,000,000
2020-03-20: removing k = 193 for n > 2,200,000
All for drive: k = 115, 117, 123, 129, 131, 133, 135, 137, 139, 141, 143, 145, 147, 149, 153, 155, 157, 159, 161, 171, 173, 175, 177, 179, 181, 183, 185, 187, 189, 193

Data table

The data file can be found here.

k-value Nash Candidates n-range # primes prime(s) for n

115 1954 43318 1000000-2300000 2 1141719, 1524183
117 3581 77288 1000000-2300000 6 1104138, 1210282, 1302764, 1554601, 1618434, 2117600
123 2133 45841 1000000-2300000 3 1225115, 1241690, 1779728
129 2753 59465 1000000-2300000 1 1376223
131 1065 5491 2000000-2300000 0
133 1442 7097 2000000-2300000 0
135 2322 51611 1000000-2300000 2 1288177, 2180256
137 1109 5321 2000000-2300000 1 2244398
139 2586 12577 2000000-2300000 0
141 1901 9565 2000000-2300000 0
143 2243 10886 2000000-2300000 1 2007888
145 1098 5497 2000000-2300000 0
147 2806 59973 1000000-2300000 3 1273684, 1374216, 1499333
149 1022 21856 1000000-2300000 4 1054092, 1138804, 1541152, 1945668
153 3189 68668 1000000-2300000 2 1215327, 1245154
155 1317 28793 1000000-2300000 1 1207424
157 917 19652 1000000-2300000 1 1085121
159 2237 47564 1000000-2300000 3 1004981, 1240229, 2081069
161 1273 6598 2000000-2300000 0
171 2674 57576 1000000-2300000 2 1362662, 1575999
173 1999 43684 1000000-2300000 2 1098914, 1504740
175 1792 38811 1000000-2300000 4 1065181, 1162313, 1571521, 1711779
177 1622 8047 2000000-2300000 0
179 779 16772 1000000-2300000 2 1464720, 1636808
181 2940 14832 2000000-2300000 0
183 1685 37510 1000000-2300000 4 1095896, 1219415, 1618775, 1707182
185 2161 46011 1000000-2300000 3 1234730, 2127966, 2264906
187 1158 5596 2000000-2300000 1 2172693
189 2793 60909 1000000-2300000 1 1547744
193 760 15530 1000000-2200000 1 1268399

Range history

External Links

Riesel Prime Search