'No Prime Left Behind' Mini Drive 4 for
k = 351, 355, 357, 361, 363, 365 - Complete!

This page reflects the search of primes of the form k·2n-1.

All ranges were done with LLRnet (server IB9000) maintained by D.James.
On 2009-05-29 a second team effort with 6 k's < 400 was started for the range 700000 < n ≤ 800000.
On 2009-06-18 the range 800000 < n ≤ 900000 was included.
On 2009-08-12 the range 900000 < n ≤ 1000000 was included (except for k=365 only to n=900000).
k = 365 was done for 900000 < n ≤ 1000000 by I.M.Gunn on 2009-08-25.

Data table:

Started2009-05-29
Ended2009-09-30
k's351, 355, 357, 361, 363, 365
n-Range700001 ≤ n ≤ 1000000
Candidates79342 (264 per 1000n on average)
Sieve depthp = 26.0T = 26.0·1012
Primes4 (all new)
LinkNPLB-thread

Range history:

k#ncompletedprimes
700.0 - 710.027222009-06-10-
710.0 - 720.027662009-06-12365·2715676-1, 355·2719857-1
720.0 - 730.027422009-06-15-
730.0 - 740.027492009-06-15-
740.0 - 750.026382009-06-15-
750.0 - 760.027682009-06-17-
760.0 - 770.027182009-06-19-
770.0 - 780.027412009-06-23-
780.0 - 790.027262009-06-29-
790.0 - 800.027782009-07-05-
800.0 - 810.026842009-07-19-
810.0 - 820.027742009-07-31-
820.0 - 830.027382009-08-05351·2825586-1
830.0 - 840.027502009-08-06-
840.0 - 850.026702009-08-11-
850.0 - 860.027102009-08-08-
860.0 - 870.028242009-08-10-
870.0 - 880.027902009-08-13-
880.0 - 890.026962009-08-16-
890.0 - 900.027402009-08-25-
900.0 - 910.025032009-09-01-
910.0 - 920.024472009-09-11-
920.0 - 930.024742009-09-12-
930.0 - 940.024552009-09-13-
940.0 - 950.024522009-09-15-
950.0 - 960.024372009-09-18-
960.0 - 970.024892009-09-21-
970.0 - 980.024242009-09-25-
980.0 - 990.025112009-09-27351·2985817-1
990.0 -1000.024262009-09-30-