is 2 26625659 - 1
has 8015123 decimal digits
takes 24.647 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-LAF018E60BED23427double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual27117.955564.7887%28000030800000.58063.1735%18.536165.9062%1.1174%
PrimeNet2660.554762.1212%12000045000000.48145.1992%1.036064.0906%1.9694%
GPU722708.974464.2857%19000055000000.64333.7961%9.617865.6415%1.3557%
Difference+1+8.9811+0.5030%+90000-2420000-0.0628-0.6225%+8.9183+0.2647%-0.2383%

Known prime factors (1 factor, 67.3 bits, 0.00025266% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
266256591781320561018722884392167.2723345120135841
11 × 304101830531
2011-10-11113041018305311.626522,23941,536

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2005-08-16T00:00:00ahmeraliv4_computers2800003080000---0.581--3.174%
2011-10-11T05:18:00Carsten KossendeyManual testing28000030800002167.2720.58149.291.1613.174%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2004-06-21T00:00:00ANONYMOUSv4_computers21262--0.023--
2004-09-02T00:00:00iPrimev4_computers21267--1.116--
2004-09-14T00:00:00iPrimev4_computers21267--1.116--
2011-10-11T05:18:00Carsten KossendeyManual testing267271--16.84--


ECM factoring results:
No ECM results for M26625659


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2005-09-22T00:00:00ahmeraliv4_computersAF018E60BED2342724.65


PRP results:
No PRP results for M26625659


P-1 factor-bounds graph:
B1 = 280000, B2 = 3080000 (P-1 stage 2)
B1 = 280000 (P-1 stage 1)
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100
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1010
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TF factor-bounds graph:
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262
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2100
Last modified: 2011-10-11T05:18:53+00:00