is 2 1969757 - 1
has 592956 decimal digits
takes 0.130 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
Actual26715.085168.6567%1320001343815200.70995.8649%15.795070.4950%1.8383%
PrimeNet2580.019563.7931%80001400000.00142.4716%0.020964.6880%0.8949%
GPU722620.311966.1290%80001000000.00121.1959%0.313166.5341%0.4050%
Difference+5+14.7732+2.5277%+124000+134281520+0.7087+4.6691%+15.4818+3.9609%+3.9609%

Known prime factors (2 factors, 121.1 bits, 0.00614943% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
196975779570895014261131652.8212019815008
25 × 63119219
-32631192190.00040.32790.6123
19697573653269845005608081512168.30892734023663975
3 × 52 × 1236453648853
2021-07-1625123645364885341.3956,422.411,995

1 Composite Factors:
exponentprime factorscomposite factordigitsbits*
1969757290693951295707271249688479029464706337121.129
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2022-08-12T10:08:05harleei5-5250U_1600132000134381520-
skipped known factor: 7957089501426113
--0.710--5.865%


Trial Factoring results:
No TF results for M1969757


ECM factoring results:

Old Calculation Method

Total ECM effort:26.134 GHz-days
Estimated T-Level:24.732
DigitsB1CurvesCompleteFacMiss
2011000265 / 1002.6506.972%
2550000265 / 2800.94638.747%

New Calculation Method

Total ECM effort:26.134 GHz-days
Estimated T-Level:24.732
DigitsB1CompleteFacMiss
201100010.9080.002%
25500001.03035.689%
302500000.06693.644%
3510000000.00399.691%


ECM Summary

B1B2factorcurvesGHz-days
500005000000383.208
50000585000070.631
50000665000040.383
50000750000021621.91


Lucas-Lehmer results:
No L-L results for M1969757


PRP results:
dateuseridcompidcofactorsres64PRP
2017-10-05T10:08:59Oliver KruseGTX-3
7957089501426113
C204AF9A72BFF8__no
2017-11-12T03:28:39kkmrkkblmbrbkc4.xlarge
7957089501426113
C204AF9A72BFF8__no
2021-07-16T13:02:41GURA LOVE
7957089501426113
365326984500560808151
90A051FE32F24F31no


P-1 factor-bounds graph:
B1 = 132000, B2 = 134381520 (P-1 stage 2)
B1 = 132000 (P-1 stage 1)
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TF factor-bounds graph:
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Last modified: 2022-08-12T10:08:05+00:00