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Old 2005-12-23, 14:33   #168
Kosmaj
 
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Nov 2003

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New files in the 270-280k range sieved to 2150bn are now available.

BTW, here is the number of candidates per k in the 270-280k range sorted in their decresing order together with the number of primes found so far.
Code:
     k       #cand  #primes
 870667875    1461     4
1952775825    1455     3
 804003525    1415     3
 460735275    1408     3
3467560635    1403     0
 918332415    1367     4
 697942245    1310     2
2022381375    1303     5
1738812075    1291     1
1626176475    1285     2
 779602395    1283     0
1694614845    1278     3
 663301485    1271     1
3276742755    1250     3
1325978745    1241     3
  67342275    1211     1
Overall in the 200-400 range the order is slightly different but the first and the last k are the same.

Observations:
1) k=3467560635 has a lot of candidates surviving sieving yet it is together with k=779602395 without primes.
2) k=2022381375 is in the middle by number of candidates but it produced the largest number of primes (5).
3) k=870667875 on the top produced many primes as expected (4).
4) k=3276742755 and k=1325978745 are near the bottom but with 3 primes each they are the most prolific.

Last fiddled with by Kosmaj on 2005-12-23 at 14:36
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