is 2 27081049 - 1
has 8152209 decimal digits
takes 25.069 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-LCF3BAAD52129D031double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual275282.555866.6667%60000040410279030.31355.6567%312.869368.5522%1.8856%
PrimeNet2660.545362.1212%12000045000000.48145.2109%1.026764.0950%1.9738%
GPU722708.823564.2857%20000060000000.69263.9027%9.516165.6795%1.3938%
Difference+5+273.7323+2.3810%+400000+398102790+29.6209+1.7540%+303.3532+2.8727%+0.4918%

Known prime factors (1 factor, 124.7 bits, 0.00046045% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
270810493441397712254178795850040083934543227138124.694635388553865505504578135079615
3 × 5 × 43 × 433 × 2789 × 9293 × 23801 × 118211 × 31198537
2021-12-31118211311985376.164e+92.43164.2613

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2006-01-01T00:00:00ANONYMOUSv4_computers2550001275000---0.417--1.582%
2021-12-31T09:49:27axnManual testing60000040410279038124.69430.3150.1460.635.657%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2001-08-18T00:00:00Net_Forcev4_computers21256--0.000--
2002-08-31T00:00:00Jocelyn Larouchev4_computers21257--0.001--
2004-03-01T00:00:00ANONYMOUSv4_computers21262--0.023--
2004-10-18T00:00:00korvav4_computers21267--1.097--
2011-10-19T21:10:00Carsten KossendeyManual testing267268--1.104--
2018-04-09T13:23:56VictordeHollanderManual testing268269--2.208--
2018-09-04T04:29:37chuenkitManual testing269270--4.415--
2021-02-15T06:20:31mikrManual testing270271--8.830--
2021-08-23T16:28:25TheJudgerManual testing271272--17.66--
2021-08-23T16:28:25TheJudgerManual testing272273--35.32--
2021-09-19T17:01:08TheJudgerManual testing273274--70.64--
2021-10-11T20:27:28TheJudgerManual testing274275--141.3--


ECM factoring results:
No ECM results for M27081049


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2006-01-15T00:00:00ANONYMOUSv4_computersCF3BAAD52129D03125.07
2011-11-15T16:32:00ANONYMOUSCF3BAAD52129D03125.07


PRP results:
No PRP results for M27081049


P-1 factor-bounds graph:
B1 = 600000, B2 = 404102790 (P-1 stage 2)
B1 = 600000 (P-1 stage 1)
B1 = 255000, B2 = 1275000 (P-1 stage 2)
B1 = 255000 (P-1 stage 1)
104
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106
104
105
106
107
108
109
TF factor-bounds graph:
275
274
273
272
271
270
269
268
267
262
257
256
250
260
270
280
290
2100
2110
2120
2130
Last modified: 2021-12-31T09:53:54+00:00