is 2 1380619 - 1
has 415608 decimal digits
takes 0.053 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
Actual26721.522268.6567%500000150000000.07144.8990%21.593670.1922%1.5355%
PrimeNet2560.007062.5000%65001100000.00072.7547%0.007663.5330%1.0330%
GPU722600.111265.0000%5500650000.00051.1709%0.111765.4098%0.4098%
Difference+7+21.4109+3.6567%+494500+14935000+0.0709+3.7280%+21.4819+4.7824%+4.7824%

Known prime factors (4 factors, 266.4 bits, 0.01929774% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
138061940893934791031.9291481
1481
-114812.736e-104.519e-68.341e-6
138061999532411025915717211963.1103604629916940
22 × 5 × 13 × 1327 × 10447597
2015-01-111327104475972.21490.03160.0589
1380619544732855527876800798705292685.49419727848723213167456
25 × 3 × 199 × 2441 × 6047 × 69959657
2018-11-096047699596577,562,4510.21130.3941
1380619719622184529907374438749032685.89526061577615906610529
3 × 8687192538635536843
2018-11-093868719253863553684310,477,6062.620e+104.894e+10

11 Composite Factors:
exponentprime factorscomposite factordigitsbits*
1380619407027192598527433962182073592995.039
138061922276269871927484919016074045688039136117.423
138061929428182687603378975038315681995753736117.825
138061954218574475721398333318103633372938429771040945148.604
138061971625731053998107616887979083259532327641806345149.005
138061939200184748018513351699683644090246713374363124336
87
52171.389
138061922172108490169093016503252143096150118977419411950
22911
55180.533
138061929290579750082765816684193193656992956524809413100
11177
55180.935
138061916030497988414216667171511986050561179717430264644
126237727073
62203.318
138061939016889006316110090397633609008264311336814288976
833668877363916965327
71234.499
138061915955541147329589041631818339770963173188919412597
5885187574737252747905702902633
81266.428
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2015-01-11T14:36:00alpertronManual testing50000015000000121963.1100.0710.1050.1434.899%


Trial Factoring results:
No TF results for M1380619


ECM factoring results:

Old Calculation Method

Total ECM effort:25.303 GHz-days
Estimated T-Level:25.391
DigitsB1CurvesCompleteFacMiss
2011000301 / 1003.0104.855%
2550000301 / 2801.07534.064%
3025000050 / 6400.07892.479%

New Calculation Method

Total ECM effort:25.303 GHz-days
Estimated T-Level:25.391
DigitsB1CompleteFacMiss
201100014.6540.000%
25500001.65119.189%
302500000.14186.866%
3510000000.01099.021%


ECM Summary

B1B2factorcurvesGHz-days
50000500000021810.23
500005000000321.502
50000500000010.047
250000350000005013.52


Lucas-Lehmer results:
No L-L results for M1380619


PRP results:
dateuseridcompidcofactorsres64PRP
2017-10-01T00:01:44Oliver KruseGTX-0
4089393479
9953241102591571721
9B71A7C327C0D5__no
2017-10-24T20:14:52kkmrkkblmbrbkold
4089393479
9953241102591571721
9B71A7C327C0D5__no
2018-11-09T14:53:26rucio
4089393479
9953241102591571721
54473285552787680079870529
71962218452990737443874903
B860D7BE19B521__no
2018-11-09T15:31:55ATHec2-PRPCFDC
4089393479
9953241102591571721
54473285552787680079870529
71962218452990737443874903
B860D7BE19B521__no


P-1 factor-bounds graph:
B1 = 500000, B2 = 15000000 (P-1 stage 2)
B1 = 500000 (P-1 stage 1)
100
101
102
103
104
105
106
100
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102
103
104
105
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109
1010
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1013
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1016
1017
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1019
TF factor-bounds graph:
267
230
240
250
260
270
280
290
2100
Last modified: 2021-09-17T08:20:11+00:00