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Old 2006-01-25, 11:06   #67
grobie
 
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Choose your own k:
k=1222853775
This makes 124 primes < 200k

1222853775 184373
1222853775 184993

progress: box#1 testing n=o to 250k currently at 197277 with 124 primes

box#2 testing n=250 to 300k currently at 270553 with 2 primes

Total 126 Primes
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Old 2006-01-26, 17:48   #68
ValerieVonck
 
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360949875*2^69027 - 1 is prime! 20788 digits
360949875*2^70726 - 1 is prime! 21300 digits
360949875*2^79219 - 1 is prime! 23856 digits

Makes 96 primes!
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Old 2006-02-01, 17:29   #69
ValerieVonck
 
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360949875*2^107774 - 1 is prime! 32452 digits
360949875*2^111307 - 1 is prime! 33516 digits

Makes 98 primes!
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Old 2006-02-02, 20:30   #70
amphoria
 
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Sep 2005
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Default Primes of k=5169615 < n=210000

All the primes of k=5169615 less than n=210000. This k is interesting in that primes are relatively sparse between n=10k and n=100k, but there are quite a few between n=100k and n=200k.

Code:
5169615 1
5169615 5
5169615 9
5169615 14
5169615 21
5169615 24
5169615 26
5169615 27
5169615 32
5169615 41
5169615 48
5169615 51
5169615 55
5169615 56
5169615 59
5169615 65
5169615 68
5169615 85
5169615 97
5169615 99
5169615 127
5169615 149
5169615 174
5169615 199
5169615 207
5169615 270
5169615 275
5169615 336
5169615 346
5169615 351
5169615 420
5169615 525
5169615 526
5169615 537
5169615 564
5169615 598
5169615 627
5169615 631
5169615 659
5169615 701
5169615 822
5169615 900
5169615 982
5169615 1182
5169615 1289
5169615 1398
5169615 1417
5169615 1466
5169615 1478
5169615 1522
5169615 1776
5169615 2033
5169615 2108
5169615 2144
5169615 2435
5169615 2511
5169615 3471
5169615 3649
5169615 3705
5169615 3786
5169615 3910
5169615 4181
5169615 4618
5169615 5225
5169615 5281
5169615 5285
5169615 5451
5169615 6199
5169615 7112
5169615 7163
5169615 8026
5169615 8677
5169615 11093
5169615 12178
5169615 12582
5169615 15567
5169615 18234
5169615 19368
5169615 24761
5169615 31441
5169615 34229
5169615 39920
5169615 49932
5169615 62435
5169615 86969
5169615 109368
5169615 114065
5169615 121166
5169615 122409
5169615 122865
5169615 131241
5169615 134948
5169615 138531
5169615 146297
5169615 146505
5169615 154275
5169615 158790
5169615 158802
5169615 175677
5169615 183408
5169615 186027
5169615 186357
5169615 199712
5169615 207884

Last fiddled with by amphoria on 2006-02-02 at 20:32
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Old 2006-02-03, 21:40   #71
Kosmaj
 
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This one is not so small, but it was not enough for Top-5000.

445419975*2^203536-1 (61280 digits)

I found it back in October but I think I never told anybody about it
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Old 2006-02-06, 11:09   #72
grobie
 
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Raleigh, North Carolina

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Default k=1222853775

Choose your own k:
k=1222853775
This makes 129 primes

1222853775 210992

progress: box#1 testing n=o to 250k currently at 231177 with 126 primes

box#2 testing n=250 to 300k currently at 293245 with 3 primes

Total 129 Primes
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Old 2006-02-09, 18:35   #73
amphoria
 
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"Dave"
Sep 2005
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Default k=317372055

From choose your own k:

317372055 53955
317372055 62185
317372055 63635
317372055 84815

This makes 100 primes for this k. The other 96 for n < 50k were found by Larry.
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Old 2006-02-12, 15:58   #74
ValerieVonck
 
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Default k = 360949875

360949875*2^114960 - 1 is prime! 34615 digits

Makes 99 primes!
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Old 2006-02-12, 15:59   #75
ValerieVonck
 
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Default k = 234686595

234686595*2^119958 - 1 is prime! 36120 digits
234686595*2^123788 - 1 is prime! 37273 digits

Makes 102 primes!
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Old 2006-02-19, 10:47   #76
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Default k= 360949875

360949875*2^132482 - 1 is prime! 39890 digits

Makes 100 primes!
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Old 2006-03-01, 19:41   #77
amphoria
 
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"Dave"
Sep 2005
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Default k=317372055

The remaining primes for this k that did not make it into the Top-5000.

317372055 91950
317372055 94270
317372055 139077
317372055 144290
317372055 149461
317372055 159253
317372055 168581
317372055 181167
317372055 185656
317372055 191704

That makes 110 primes less than 200k, but only two found between 200k and 300k.
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