is 2 1103449 - 1
has 332172 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-LCD7131B505C4FE33double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual26726.928268.6567%300000100000000.03564.1164%26.963869.9469%1.2902%
PrimeNet2560.008762.5000%4500650000.00032.0290%0.009063.2609%0.7609%
GPU722600.139265.0000%4500220000.00020.6843%0.139465.2395%0.2395%
Difference+7+26.7890+3.6567%+295500+9978000+0.0354+3.4322%+26.8244+4.7075%+4.7075%

Known prime factors (2 factors, 146.9 bits, 0.01331592% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
11034491151904514546761587772166.64352195639062012
22 × 3 × 29 × 227 × 660737747
2007-10-0222766073774723.2691.54712.8896
110344914799246115924582523132232580.292670590399552882939
32 × 13 × 197 × 29094121200611
2018-04-2719729094121200611364,99968,123127,235

1 Composite Factors:
exponentprime factorscomposite factordigitsbits*
110344917047318412822153196103455377808390828460827145146.934
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2002-02-24T00:00:00Jocelyn Larouchev4_computers15000153750---0.001--0.683%
2016-03-17T18:59:52alpertronManual testing3000001000000012---0.036--4.116%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2001-12-01T00:00:00ANONYMOUSv4_computers21257--0.017--
2022-04-12T17:43:15LordJuliusManual testing21261--0.278--
2022-04-12T17:43:15LordJuliusManual testing261262--0.278--
2022-04-12T17:43:15LordJuliusManual testing262263--0.890--
2022-04-12T17:43:15LordJuliusManual testing263264--1.779--


ECM factoring results:

Old Calculation Method

Total ECM effort:17.643 GHz-days
Estimated T-Level:25.344
DigitsB1CurvesCompleteFacMiss
2011000325 / 1003.2503.815%
2550000325 / 2801.16131.261%
3025000044 / 6400.06993.351%

New Calculation Method

Total ECM effort:17.643 GHz-days
Estimated T-Level:25.344
DigitsB1CompleteFacMiss
201100014.8080.000%
25500001.62019.795%
302500000.13287.678%
3510000000.00999.129%


ECM Summary

B1B2factorcurvesGHz-days
10.00000e+0
5000050000001615.670
5000050000001204.226
25000025000000447.747


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2002-04-14T00:00:00ANONYMOUSv4_computersCD7131B505C4FE330.033


PRP results:
dateuseridcompidcofactorsres64PRP
2017-09-29T02:05:52Oliver KruseGTX-3
115190451454676158777
2420CA41AA160E__no
2017-10-16T13:48:11Oliver KruseThreadripper
115190451454676158777
2420CA41AA160E__no
2018-01-01T13:58:14ATHec2-1xf
115190451454676158777
2420CA41AA160E__no
2018-04-29T10:09:51Oliver KruseGTX-1
115190451454676158777
1479924611592458252313223
4AD31B8A524F41__no
2018-04-30T12:05:45kkmrkkblmbrbkc5.large
115190451454676158777
1479924611592458252313223
4AD31B8A524F41__no
2018-05-03T01:37:13noknopcr2-srv?


P-1 factor-bounds graph:
B1 = 300000, B2 = 10000000 (P-1 stage 2)
B1 = 300000 (P-1 stage 1)
B1 = 15000, B2 = 153750 (P-1 stage 2)
B1 = 15000 (P-1 stage 1)
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TF factor-bounds graph:
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Last modified: 2022-04-12T17:43:15+00:00