is 2 190753 - 1
has 57423 decimal digits
takes 0.001 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L-unknown--unknown-
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual267155.771773.1343 %10000000020000000001.360712.2887 %157.132476.4358 %
Target2440.000059.0909 %34003500000.00018.4593 %0.000262.5515 %
Difference+23+155.7717+14.0434 %+99996600+1999650000+1.3606+3.8294%+157.1323+13.8842 %

Known prime factors (2 factors, 81.1 bits, 0.04250786% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
1907531144519720.1263
3
-137.328e-137.415e-91.361e-8
19075322407715851656068791960.9595873489762063
7 × 112 × 6934462529
2014-07-0612169344625291.06022.52614.7180

1 Composite Factors:
P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2017-01-10kkmrkkblmbrbkManual testing100000000200000000012
skipped known factor: 1144519
---41.959%


Trial Factoring results:
5758596061626364656667
No TF results for M190753


ECM factoring results:
Total ECM effort:21.233 GHz-days
Estimated T-Level:29.626
DigitsB1CompleteFacMiss
201100060.2850.000%
25500008.7560.016%
302500000.92539.643%
3510000000.07692.646%
4030000000.00599.489%


ECM Summary

B1B2factorcurvesGHz-days
10.005
5000050000002811.370
2500002500000044810.47
2500003575000070.167
25000036000000140.391
25000038500000140.402
25000036755218520.269
250000551335785408.158


Lucas-Lehmer results:
No L-L results for M190753


PRP results:
dateuseridcompidcofactorsres64
2017-09-22Oliver KruseDoppelherz
1144519
2240771585165606879
7CF2FEC58A452CBB
2017-09-22Oliver KruseManual testing
1144519
2240771585165606879
7CF2FEC58A452CBB
2017-09-30alpertronManual testing
1144519
2240771585165606879
7CF2FEC58A452CBB
2017-12-07ATHxps
1144519
2240771585165606879
7CF2FEC58A452CBB
2020-04-17Oliver KruseAddPrpType5
1144519
2240771585165606879
CBF1724DB393E95C
2023-08-24USAFSS6917th_Scty_Sq
1144519
2240771585165606879
CBF1724DB393E95C


CERT results:
dateuseridcompid
2023-08-24Noodles3900X


P-1 factor-bounds graph:
B1 = 100000000, B2 = 2000000000 (P-1 stage 2)
B1 = 100000000 (P-1 stage 1)
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108
100
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109
1010
TF factor-bounds graph:
this exponent TF target: 44
TF double-checked to: 67
ECM T-Level=29.63 ~= 82-bit
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Last modified: 2024-03-13T02:15:48+00:00