is 2 26245511 - 1
has 7900687 decimal digits
takes 24.295 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L55F4B542849EFC01double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual27118.215664.7887%4050004050000.54361.6995%18.759265.3872%0.5984%
PrimeNet2660.562762.1212%12000045000000.48145.1893%1.044164.0869%1.9656%
GPU722709.104464.2857%19000055000000.64333.7887%9.747865.6388%1.3531%
Difference+1+9.1112+0.5030%+215000-5095000-0.0997-2.0892%+9.0114-0.2517%-0.7547%

Known prime factors (1 factor, 67.1 bits, 0.00025568% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
262455111585804591393086479992167.1043021096810409
4283 × 705369323
2011-11-2542837053693231.735951.58996.344

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2005-04-11T00:00:00ANONYMOUSv4_computers405000405000---0.544--1.700%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2011-11-25T20:13:00Carsten KossendeyManual testing??67.104210.60449.551.231
2004-07-26T00:00:00ANONYMOUSv4_computers21267--1.132--
2011-11-25T20:13:00Carsten KossendeyManual testing267271--17.08--


ECM factoring results:
No ECM results for M26245511


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2006-05-12T00:00:00ANONYMOUSv4_computers55F4B542849EFC0124.30


PRP results:
No PRP results for M26245511


P-1 factor-bounds graph:
B1 = 405000 (P-1 stage 1)
102
103
104
105
106
102
103
104
105
106
107
108
109
TF factor-bounds graph:
271
267
2
250
260
270
280
290
2100
Last modified: 2011-11-25T20:13:43+00:00