is 2 238709 - 1
has 71859 decimal digits
takes 0.001 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
-unknown- L-L tests remaining
ResidueStatus
L-L-unknown--unknown-
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actualunknown3000000030000000001.560652.3225%1.560652.3225%52.3225%
PrimeNet2400.000055.0000%2600650000.000013.9223%0.000061.2650%6.2650%
GPU722440.000059.0909%45001100000.000110.0880%0.000163.2178%4.1269%
Difference-440.0000-59.0909%+29995500+2999890000+1.5605+42.2345%+1.5605-10.8954%-10.8954%

Known prime factors (3 factors, 256.6 bits, 0.10748099% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
23870944299616231032.0459279
32 × 1031
-910312.417e-95.263e-78.570e-7
238709722001724436623122774075969045731102.51015123052009698484824076092
22 × 3 × 31 × 113 × 5088383 × 70703069619509
2017-08-255088383707030696195095.909e+1131,34158,536
238709536247460349179996282577816882587573737122.01211232242193406616346316599225052
22 × 53 × 911 × 318671 × 1456501 × 2116537 × 59201543
2021-07-162116537592015436.945e+110.04250.0490

4 Composite Factors:
exponentprime factorscomposite factordigitsbits*
2387093198439930994061729603573842158986933171141134.554
2387092375555669778081563051102392300984448427684115147154.057
23870938717159109686764001966122758831914732340709991870
643297072066741809
68224.522
23870917151552900749721207976782036773226657187766222455
9591786351443931508519596007
78256.567
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2021-07-16T04:10:45Oliver KruseOllaptop3000000030000000002437122.0121.5610.0033.12143.925%


Trial Factoring results:
Exponent "238709" not found


ECM factoring results:

Old Calculation Method

Total ECM effort:11.408 GHz-days
Estimated T-Level:27.547
DigitsB1CurvesCompleteFacMiss
2011000607 / 1006.0700.224%
2550000607 / 2802.16811.398%
30250000326 / 6400.50960.063%

New Calculation Method

Total ECM effort:11.408 GHz-days
Estimated T-Level:27.547
DigitsB1CompleteFacMiss
201100036.2310.000%
25500004.7470.868%
302500000.47462.227%
3510000000.03896.312%
4030000000.00299.756%


ECM Summary

B1B2factorcurvesGHz-days
5000050000002811.677
250000250000003079.163
25000025000000190.567


Lucas-Lehmer results:
Exponent "238709" not found


PRP results:
dateuseridcompidcofactorsres64PRP
2017-09-22T05:49:01Oliver KruseOllaptopDB0B9F7EEF012D__?
2017-09-22T10:05:24Oliver KruseManual testingDB0B9F7EEF012D__?
2017-10-12T15:59:36kkmrkkblmbrbkc4.xlargeDB0B9F7EEF012D__no
2020-04-17T20:09:40Oliver KruseAddPrpType5
4429961623
7220017244366231227740759690457
D7BBC1217280D5__no
2021-07-16T12:27:31123456789123456789byebye
4429961623
7220017244366231227740759690457
5362474603491799962825778168825875737
D7BBC1217280D553no


P-1 factor-bounds graph:
B1 = 30000000, B2 = 3000000000 (P-1 stage 2)
B1 = 30000000 (P-1 stage 1)
100
101
102
103
104
105
106
107
108
100
101
102
103
104
105
106
107
108
109
1010
1011
1012
1013
1014
TF factor-bounds graph:
230
240
250
260
270
280
290
2100
2110
2120
2130
Last modified: 2021-07-16T12:27:31+00:00