mersenneforum.org The Second Megabit Drive
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2011-04-28, 09:42   #1
Kosmaj

Nov 2003

2·1,811 Posts
The Second Megabit Drive

We are starting the second megabit drive, featuring Ks between 100 and 200, and initially we are going to test the following 19 Ks from n=1M to n=1.1M:

k = 115, 117, 123, 129, 135, 147, 149, 153, 155,
157, 159, 171, 173, 175, 179, 183, 185, 189, 193

When we reach 1.1M we might replace some Ks.

Update (June 19, 2015): Extending the drive beyond n=2M and adding the following 11 Ks: 131, 133, 137, 139, 141, 143, 145, 161, 177, 181, and 187.

Update (March 20th, 2020): Removing k=193 from the drive to be searched by an individual.

Status
Code:
    Range of n        Tested by        Status
1,000,000-1,700,000 - RPS            - Complete (38 primes)
1,700,000-1,708,000 - Carlos         - Complete (183*2^1707182-1 is prime)
1,708,000-1,720,000 - Carlos         - Complete (175*2^1711779-1 is prime)
1,720,000-1,750,000 - kracker        - Complete
1,750,000-1,762,000 - Carlos         - Complete
1,762,000-1,780,000 - kracker        - Complete (123*2^1779728-1 is prime)
1,780,000-1,830,000 - Thomas         - Complete
1,830,000-1,838,000 - lsoule         - Complete
1,838,000-1,900,000 - kracker        - Complete
1,900,000-1,902,000 - lsoule/Carlos  - Complete
1,902,000-1,950,000 - kracker        - Complete (149*2^1945668-1 is prime)
1,950,000-1,952,000 - Kosmaj         - Complete
1,952,000-1,980,000 - kracker        - Complete
1,980,000-2,042,000 - Carlos         - Complete (143*2^2007888-1 is prime)
2,042,000-2,054,000 - amphoria       - Complete
2,054,000-2,056,000 - Kosmaj         - Complete
2,056,000-2,068,000 - amphoria       - Complete
2,068,000-2,070,000 - Kosmaj         - Complete
2,070,000-2,094,000 - amphoria       - Complete (159*2^2081069-1 is prime)
2,094,000-2,096,000 - Kosmaj         - Complete
2,096,000-2,108,000 - amphoria       - Complete
2,108,000-2,110,000 - Kosmaj         - Complete
2,110,000-2,120,000 - amphoria       - Complete (117*2^2117600-1 is prime)
2,120,000-2,170,000 - amphoria       - Complete (185*2^2127966-1 is prime)
2,170,000-2,180,000 - amphoria       - Complete (187*2^2172693-1 is prime)
2,180,000-2,200,000 - amphoria       - Complete
2,200,000-2,202,000 - unconnected    - Complete
Test Files
Extensively sieved by Psieve (the latest sieve file of July 31, 2011)

Attached is a file containing the list of candidates from n=2202k to 3000k. Note that it has not been broken into chunks so you will need to copy the first line into a file as well as the list of candidates you are searching.
Attached Files
 smd_2202-3000.zip (1.18 MB, 28 views)

Last fiddled with by amphoria on 2020-03-20 at 07:48

 2011-04-28, 09:43 #2 Kosmaj     Nov 2003 1110001001102 Posts Found Primes 115 [2]: 1141719, 1524183 117 [5]: 1104138, 1210282, 1302764, 1554601, 1618434 123 [3]: 1225115, 1241690, 1779728 129 [1]: 1376223 135 [1]: 1288177 143 [1]: 2007888 147 [3]: 1273684, 1374216, 1499333 149 [4]: 1054092, 1138804, 1541152, 1945668 153 [2]: 1215327, 1245154 155 [1]: 1207424 157 [1]: 1085121 159 [3]: 1004981, 1240229, 2081069 171 [2]: 1362662, 1575999 173 [2]: 1098914, 1504740 175 [4]: 1065181, 1162313, 1571521, 1711779 179 [2]: 1464720, 1636808 183 [4]: 1095896, 1219415, 1618775, 1707182 185 [1]: 1234730 189 [1]: 1547744 193 [1]: 1268399 Total: 43 primes (Found primes for 20 out of 30 Ks) Last fiddled with by Kosmaj on 2019-02-09 at 06:58
 2011-04-28, 11:10 #3 unconnected     May 2009 Russia, Moscow 22×613 Posts Taking 1000-1004.
 2011-04-28, 11:46 #4 Kosmaj     Nov 2003 70468 Posts Taking 1004-1006.
 2011-04-29, 09:14 #5 Thomas11     Feb 2003 3·5·127 Posts Taking 1006-1010.
 2011-05-02, 02:13 #6 Kosmaj     Nov 2003 2×1,811 Posts Taking also 1010-1012.
 2011-05-05, 14:33 #7 Thomas11     Feb 2003 3·5·127 Posts Taking 1012-1016.
 2011-05-07, 13:08 #8 Kosmaj     Nov 2003 2·1,811 Posts 1004-1006 complete, one prime. Taking 1016-1018.
 2011-05-12, 13:32 #9 Thomas11     Feb 2003 190510 Posts 1006-1010 complete, no primes. Taking 1018-1020.
 2011-05-13, 01:20 #10 Kosmaj     Nov 2003 2·1,811 Posts 1010-1012 complete, no primes. Taking 1020-1022.
 2011-05-13, 13:16 #11 Thomas11     Feb 2003 3·5·127 Posts Taking 1022to1024.

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