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NPLB K300 Drive 1

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Overview

NPLB K300 Drive 1 - This drive is done.
Project No Prime Left Behind
Drive name NPLB K300 Drive 1
Purpose Search for Riesel primes for many k's < 300 and n = 2000000 - 3000000
Date start 2024-04-23
Date end 2025-03-05
k-values 77 - 299
n-range 2000000 - 3000000
Primes found 63 new, 6 confirmed
Link Thread at MersenneForum

k-history

2024-04-23: k = 91, 95, 163, 207, 209, 213, 221, 237, 247, 249, 251, 255, 261, 263, 267, 273, 277, 279, 281, 285, 287, 289, 291, 293, 297, 299
2024-04-26: added k = 77, 85 at n = 2100000
2024-05-05: added k = 203, 205, 219, 227, 235, 257, 259, 275, 295 at n = 2200000
2024-05-15: added k = 115, 117, 123, 129-149, 153-161, 171-189, 245 at n = 2300000
currently k = 77, 85, 91, 95, 115, 117, 123, 129-149, 153-163, 171-189,
203-209, 213, 219, 221, 227, 235, 237, 245-251, 255-263, 267, 273-281, 285-299

n-history

  • n = 2000000 - 3000000

Sieve history

Reservation history

Primes table

The data file can be found here.

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

77 1700 25652 2100000-3000000 4 2363352, 2387116, 2448152, 2505854
85 921 12993 2100000-3000000 1 2352083
91 2374 40004 2000000-3000000 2 2407249, 2494467
95 1490 23927 2000000-3000000 0
115 1954 23339 2300000-3000000 3 2415271, 2454363, 2762111
117 3581 41577 2300000-3000000 1 2908312
123 2133 24309 2300000-3000000 1 2583362
129 2753 31870 2300000-3000000 1 2452892
131 1065 12695 2300000-3000000 0
133 1442 17018 2300000-3000000 1 2658587
135 2322 27479 2300000-3000000 0
137 1109 12456 2300000-3000000 1 2626238
139 2586 29847 2300000-3000000 1 2751839
141 1901 22041 2300000-3000000 0
143 2243 25489 2300000-3000000 1 2400710
145 1098 12871 2300000-3000000 0
147 2806 32259 2300000-3000000 1 2993165
149 1022 11650 2300000-3000000 0
153 3189 36753 2300000-3000000 3 2522271, 2581916, 2654686
155 1317 15416 2300000-3000000 0
157 917 10557 2300000-3000000 0
159 2237 25239 2300000-3000000 0
161 1273 15038 2300000-3000000 1 2373286
163 737 12390 2000000-3000000 0
171 2674 30792 2300000-3000000 0
173 1999 23394 2300000-3000000 1 2897448
175 1792 20594 2300000-3000000 2 2553699, 2637399
177 1622 18865 2300000-3000000 0
179 779 8971 2300000-3000000 0
181 2940 34675 2300000-3000000 1 2570921
183 1685 20005 2300000-3000000 2 2433172, 2626880
185 2161 24908 2300000-3000000 0
187 1158 13011 2300000-3000000 1 2896841
189 2793 32738 2300000-3000000 2 2730633, 2762731
203 1687 22623 2200000-3000000 3 2222744, 2595752, 2935338
205 1351 18921 2200000-3000000 2 2559417, 2747571
207 1798 31592 2000000-3000000 1 2212517
209 998 16292 2000000-3000000 1 2510308
213 2538 41915 2000000-3000000 4 2064426 C, 2277870 C, 2328530 C, 2493004 C
219 1069 13880 2200000-3000000 0
221 418 7431 2000000-3000000 0
227 2550 33310 2200000-3000000 1 2462914
235 1563 20938 2200000-3000000 1 2227565
237 2404 40431 2000000-3000000 1 2627713
245 1419 17380 2300000-3000000 0
247 363 5977 2000000-3000000 0
249 1592 25514 2000000-3000000 1 2001627 C
251 417 7417 2000000-3000000 0
255 3297 55294 2000000-3000000 1 2010691
257 1867 25431 2200000-3000000 0
259 1561 20908 2200000-3000000 0
261 2394 40462 2000000-3000000 1 2707551
263 1215 19595 2000000-3000000 0
267 2205 37099 2000000-3000000 3 2640554, 2792074, 2902469
273 3029 50462 2000000-3000000 1 2024810 C
275 1581 21545 2200000-3000000 1 2679936
277 865 14041 2000000-3000000 0
279 2345 38639 2000000-3000000 0
281 937 15706 2000000-3000000 0
285 3331 54916 2000000-3000000 4 2110099, 2138174, 2570839, 2728979
287 1307 21316 2000000-3000000 3 2054534, 2197108, 2697536
289 1642 29651 2000000-3000000 1 2118129
291 1969 32394 2000000-3000000 2 2071142, 2725533
293 1483 23718 2000000-3000000 1 2791482
295 1266 15787 2200000-3000000 3 2242469, 2463785, 2663855
297 2974 50449 2000000-3000000 2 2778276, 2937584
299 1199 20662 2000000-3000000 0

Notes

No Prime Left Behind