is 2 189067 - 1
has 56915 decimal digits
takes 0.001 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
Actualunknown10000000020000000001.360749.4662%1.360749.4662%49.4662%
PrimeNet2400.000055.0000%2000450000.000012.1225%0.000060.4551%5.4551%
GPU722440.000059.0909%3400700000.00008.4465%0.000162.5463%3.4554%
Difference-440.0000-59.0909%+99996600+1999930000+1.3607+41.0197%+1.3607-13.0801%-13.0801%

Known prime factors (2 factors, 158.1 bits, 0.08364043% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
1890676899238818660391549.2931824548657
149 × 12245293
-149122452930.00080.00450.0083
18906758212592167243393292879886257988933108.8431539469927783362334328039432
23 × 13 × 29 × 359 × 1531 × 63421 × 14643238897153
2020-07-0363421146432388971539.195e+115,334.29,962.8

1 Composite Factors:
exponentprime factorscomposite factordigitsbits*
18906740162257561509138080160361877922672957903348967148158.136
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2017-08-01T00:16:32kkmrkkblmbrbkManual testing100000000200000000012-
skipped known factor: 689923881866039
--1.361--41.943%


Trial Factoring results:
No TF results for M189067


ECM factoring results:

Old Calculation Method

Total ECM effort:12.542 GHz-days
Estimated T-Level:28.570
DigitsB1CurvesCompleteFacMiss
2011000738 / 1007.3800.060%
2550000738 / 2802.6367.133%
30250000457 / 6400.71448.938%

New Calculation Method

Total ECM effort:12.542 GHz-days
Estimated T-Level:28.570
DigitsB1CompleteFacMiss
201100047.1480.000%
25500006.3320.178%
302500000.64652.438%
3510000000.05294.951%
4030000000.00399.660%


ECM Summary

B1B2factorcurvesGHz-days
5000050000002811.370
250000250000003458.407
25000025000000982.388
2500003225000070.187
2500003375000070.190


Lucas-Lehmer results:
No L-L results for M189067


PRP results:
dateuseridcompidcofactorsres64PRP
2017-09-22T01:22:49Oliver KruseOllaptop
689923881866039
40112945DA0BFF__no
2017-09-22T10:01:48Oliver KruseManual testing
689923881866039
40112945DA0BFF__no
2017-10-12T04:37:45kkmrkkblmbrbkc4.xlarge40112945DA0BFF__no
2020-04-17T19:02:45Oliver KruseAddPrpType5
689923881866039
2E06CBF84EC92F__no
2020-07-02T11:04:11CrypticClueManual testing
689923881866039
582125921672433932928798862579889
2E06CBF84EC92FF2no


P-1 factor-bounds graph:
B1 = 100000000, B2 = 2000000000 (P-1 stage 2)
B1 = 100000000 (P-1 stage 1)
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TF factor-bounds graph:
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Last modified: 2022-04-23T01:19:07+00:00