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Kosmaj 2011-04-28 09:42

The Second Megabit Drive
 
1 Attachment(s)
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.
Please help yourself and happy hunting! :smile:

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

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

[B]Status[/B]
[CODE]
Range of n Tested by Status
[URL="http://kosmaj.sakura.ne.jp/rps/megabit2/megabit2_done.txt"]1,000,000-1,700,000[/URL] - 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
[/CODE]
[B]Test Files[/B]
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.

Kosmaj 2011-04-28 09:43

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

[B]Total: 43 primes[/B]
(Found primes for 20 out of 30 Ks)

unconnected 2011-04-28 11:10

Taking 1000-1004.

Kosmaj 2011-04-28 11:46

Taking 1004-1006.

Thomas11 2011-04-29 09:14

Taking 1006-1010.

Kosmaj 2011-05-02 02:13

Taking also 1010-1012.

Thomas11 2011-05-05 14:33

Taking 1012-1016.

Kosmaj 2011-05-07 13:08

1004-1006 complete, one prime.

Taking 1016-1018.

Thomas11 2011-05-12 13:32

1006-1010 complete, no primes.
Taking 1018-1020.

Kosmaj 2011-05-13 01:20

1010-1012 complete, no primes.

Taking 1020-1022.

Thomas11 2011-05-13 13:16

Taking 1022to1024.


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