is 2 35747 - 1
has 10761 decimal digits
takes 0.000 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
Actualunknown200000000040837035397158021,240.466678.1838%21,240.466678.1838%78.1838%
PrimeNet2400.000060.0000%500100000.00004.2902%0.000061.7161%1.7161%
GPU722440.000163.6364%500100000.00001.8512%0.000164.3095%0.6732%
Difference-44-0.0001-63.6364%+1999999500+408370353961580+21,240.4666+76.3326%+21,240.4666+13.8742%+13.8742%

Known prime factors (3 factors, 276.1 bits, 0.77246400% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
3574715569248391030.53621777
3 × 7 × 17 × 61
-17616.857e-91.852e-83.303e-8
3574741125566589602031438641669498503333108.3425752310206395226374051202828
22 × 7 × 31 × 59 × 6343 × 17708258379686508983
2019-10-236343177082583796865089834.582e+12920,977,0051.720e+9
3574720789681416900351901211732441263836514876942137.2552907891769505182518982254796383449872
24 × 11 × 24700474628593 × 668898576856016142179
2020-06-23247004746285936688985768560161421795.011e+123.479e+106.497e+10

4 Composite Factors:
exponentprime factorscomposite factordigitsbits*
3574764029416141299921871680119662648461093468742138.878
3574732367971392868872262837420436025775622447038637319
1
51167.791
3574785498742748734733390313435310786579731186478318151
829389972541887273374377
74245.597
3574713311511628877624223742166943078331061133817103446
5527750538467992263854550897450303
84276.133
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2016-10-24T17:49:34kkmrkkblmbrbkManual testing200000000500000000012-
skipped known factor: 1556924839
--0.441--41.496%
2022-03-18T07:56:40nordisweet16_ccx320000000002000000000-
skipped known factor: 1556924839
--1.909--36.080%
2022-04-10T15:20:44nordisweet16_30.8b142000000000408370353971580-
skipped known factor: 1556924839
--21,240--69.571%


P+1 Factoring results:
dateuseridcompidb1b2startfactorSmoothdigitsbits*ghz-days
2021-05-09T23:50:55ATHec2-P_11000000001000000000027--0.705


Trial Factoring results:
No TF results for M35747


ECM factoring results:

Old Calculation Method

Total ECM effort:25.977 GHz-days
DigitsB1CurvesCompleteFacMiss
20110002598 / 10025.9800.000%
25500002598 / 2809.2790.009%
302500002315 / 6403.6172.678%
3510000001731 / 15801.09633.423%

New Calculation Method

Total ECM effort:25.977 GHz-days
DigitsB1CompleteFacMiss
2011000305.0810.000%
255000057.3180.000%
302500008.5040.020%
3510000001.00836.502%
4030000000.09890.654%
45110000000.00899.181%


ECM Summary

B1B2factorcurvesGHz-days
5000050000002830.194
250000250000005842.005
10000001000000001,72223.65
100000010000000010.014
100000010000000080.110


Lucas-Lehmer results:
No L-L results for M35747


PRP results:
dateuseridcompidcofactorsres64PRP
2017-09-21T19:46:56Oliver KrusePRP
1556924839
D4984B5D3E9F17__no
2017-09-21T21:29:09Oliver KruseManual testing
1556924839
D4984B5D3E9F17__no
2017-10-12T22:21:07kkmrkkblmbrbkManual testing
1556924839
D4984B5D3E9F17__no
2019-10-24T04:47:07Niels_Mache_NextcloudSuperDry-X
1556924839
411255665896020314386416694985033
47A5B8ACEF5D86B0no
2019-10-24T10:03:03chuenkitCHAIN
1556924839
411255665896020314386416694985033
47A5B8ACEF5D86B0no
2019-10-24T15:24:33marssystemssystem03
1556924839
411255665896020314386416694985033
47A5B8ACEF5D86B0no
2020-06-23T06:16:05CrypticClueManual testing
1556924839
411255665896020314386416694985033
207896814169003519012117324412638365148769
47A5B8ACEF5D86B0no


P-1 factor-bounds graph:
B1 = 2000000000, B2 = 408370353971580 (P-1 stage 2)
B1 = 2000000000 (P-1 stage 1)
B1 = 200000000, B2 = 5000000000 (P-1 stage 2)
B1 = 200000000 (P-1 stage 1)
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TF factor-bounds graph:
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Last modified: 2022-04-10T15:20:44+00:00