is 2 1122371 - 1
has 337868 decimal digits
takes 0.033 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-LDCA96126985AB1D2double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual26726.474268.6567%300000100000000.03564.1255%26.509869.9498%1.2931%
PrimeNet2560.008662.5000%4500700000.00032.0822%0.008963.2808%0.7808%
GPU722600.136865.0000%4500220000.00020.6871%0.137165.2405%0.2405%
Difference+7+26.3374+3.6567%+295500+9978000+0.0354+3.4384%+26.3728+4.7093%+4.7093%

Known prime factors (1 factor, 61.1 bits, 0.00544511% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
112237124959740072887116471961.1141111920215013
32 × 137 × 901800661
2009-09-051379018006610.33252.11153.9438

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2002-03-16T00:00:00Jocelyn Larouchev4_computers10000100000---0.001--0.501%
2016-03-17T19:01:33alpertronManual testing3000001000000012---0.036--4.125%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2001-11-24T00:00:00ANONYMOUSv4_computers21257--0.017--
2003-04-27T00:00:00ANONYMOUSv4_computers21258--0.034--
2022-03-07T17:30:52LordJuliusManual testing258260--0.103--
2009-02-16T03:07:00Sturle Sundekorsmo.ifi260261--0.137--
2022-04-12T17:43:19LordJuliusManual testing21261--0.274--
2022-04-12T17:43:19LordJuliusManual testing26126261.114190.0590.0670.119
2022-04-12T17:43:19LordJuliusManual testing262263--0.875--
2022-04-12T17:43:19LordJuliusManual testing263264--1.749--


ECM factoring results:

Old Calculation Method

Total ECM effort:17.614 GHz-days
Estimated T-Level:25.344
DigitsB1CurvesCompleteFacMiss
2011000323 / 1003.2303.892%
2550000323 / 2801.15431.486%
3025000044 / 6400.06993.351%

New Calculation Method

Total ECM effort:17.614 GHz-days
Estimated T-Level:25.344
DigitsB1CompleteFacMiss
201100014.7310.000%
25500001.61319.937%
302500000.13187.717%
3510000000.00999.131%


ECM Summary

B1B2factorcurvesGHz-days
10.00000e+0
5000050000002799.85
25000025000000447.765


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2002-05-11T00:00:00ANONYMOUSv4_computersDCA96126985AB1D20.033


PRP results:
dateuseridcompidcofactorsres64PRP
2017-09-29T04:12:27Oliver KruseGTX-1
2495974007288711647
AAC6766856584F__no
2017-10-16T20:07:24Oliver KruseThreadripper
2495974007288711647
AAC6766856584F__no
2018-01-02T14:23:26ATHec2-1xf
2495974007288711647
AAC6766856584F__no


P-1 factor-bounds graph:
B1 = 300000, B2 = 10000000 (P-1 stage 2)
B1 = 300000 (P-1 stage 1)
B1 = 10000, B2 = 100000 (P-1 stage 2)
B1 = 10000 (P-1 stage 1)
101
102
103
104
105
106
101
102
103
104
105
106
107
108
109
TF factor-bounds graph:
267
264
263
262
261
260
258
257
250
260
270
280
290
2100
Last modified: 2022-04-12T17:43:19+00:00