is 2 57656957 - 1
has 17356474 decimal digits
takes 122.201 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
-unknown- primality tests remaining
ResidueStatus
L-L-unknown--unknown-
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual27333.176364.3836%5300005300001.62881.7029%34.805164.9901%0.6065%
PrimeNet2692.070662.3188%260000110000002.59735.5368%4.667964.4052%2.0863%
GPU7227333.176364.3836%400000130000003.33904.0743%36.515365.8347%1.4511%
Difference---+130000-12470000-1.7102-2.3714%-1.7102-0.8446%-0.8446%

Known prime factors (1 factor, 84.7 bits, 0.00014693% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
57656957317535200953020326070206632684.715275365903331509783
13 × 31 × 181 × 5119 × 13309 × 55411		2012-09-131330955411113,5910.04800.0832

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2012-09-13T22:35:00Jwb52zClay5300005300002684.7151.629244.43.2581.703%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1999-12-23T00:00:00ANONYMOUSv4_computers21253--2.08114e-5--
2000-03-08T00:00:00ANONYMOUSv4_computers21254--4.16228e-5--
2000-06-28T00:00:00ANONYMOUSv4_computers21256--0.000--
2000-06-29T00:00:00ANONYMOUSv4_computers21256--0.000--
2001-09-30T00:00:00ANONYMOUSv4_computers21257--0.000--
2002-12-02T00:00:00ANONYMOUSv4_computers21258--0.001--
2003-09-21T00:00:00Team Prime Ribv4_computers21260--0.003--
Missing TF 60 - 61
Missing TF 61 - 62
Missing TF 62 - 63
2008-10-15T23:49:00Sturle Sundefungo.ifi263264--0.034--
2008-10-17T14:47:00Sturle Sundetrufflehunter.ifi264265--0.065--
2008-10-18T09:10:00Sturle Sundetrufflehunter.ifi265266--0.130--
2008-10-19T05:21:00Sturle Sundetrufflehunter.ifi266267--0.259--
2009-06-01T19:12:00Chang Chia-Tcheeuler04267268--0.518--
2011-05-08T16:32:00ANONYMOUS268269--1.037--
2011-06-22T12:34:00Charles SpaltonTCTRE02269270--2.074--
2011-10-21T20:46:00XyzzyManual testing270271--4.147--
2011-11-29T16:55:00S34960v5Manual testing271272--8.295--
2012-08-31T14:35:00Jerry HallettManual testing272273--16.59--


ECM factoring results:
No ECM results for M57656957


Lucas-Lehmer results:
No L-L results for M57656957


PRP results:
No PRP results for M57656957


P-1 factor-bounds graph:
B1 = 530000 (P-1 stage 1)
103
104
105
106
103
104
105
106
TF factor-bounds graph:
273
272
271
270
269
268
267
266
265
264
260
258
257
256
254
253
250
260
270
280
290
2100
Last modified: 2012-09-13T22:35:50+00:00