is 2 305477 - 1
has 91958 decimal digits
takes 0.002 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
Actual26797.270671.6418%50000500000.00050.4004%97.271171.7553%0.1135%
PrimeNet2400.000052.5000%3200900000.000115.6054%0.000159.9126%7.4126%
GPU722440.000056.8182%55001500000.000111.4219%0.000161.7504%4.9322%
Difference+23+97.2705+14.8236%+44500-100000+0.0004-11.0215%+97.2709+10.0050%+10.0050%

Known prime factors (4 factors, 239.8 bits, 0.07849832% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
30547787977377826.391144
24 × 32
-993.018e-119.280e-81.889e-7
30547768988925691032.68411292
22 × 3 × 941
2008-07-2149412.705e-95.676e-79.869e-7
3054771360136864357280030335523832786.814222625085416787520883
13 × 17125006570522116991
2019-04-05131712500657052211699182,426,8569.620e+91.797e+10
305477185585938236078851429756929612993.90630376417575804209716240
24 × 5 × 7 × 37 × 199 × 281 × 16369 × 1601641297
2021-09-081636916016412976.965e+90.89991.6805

11 Composite Factors:
exponentprime factorscomposite factordigitsbits*
3054776069464724254115131859.074
3054771196612736871582879233998164843939135113.205
30547793834381063374001623338399275094192736119.498
305477163273640540942241139627144146614329737120.297
30547712803374502077773558268051071626850680939126.590
3054778255302718374115432815054351601488501678547944145.888
3054771126407305441483567656379796183769445676245999347152.980
30547725242227610122413028322441043431586215748170929178
76063
55180.720
30547722207449747755485471424350732382540342108801708968
0012433826751
63207.111
30547717414341648448014442144247505047077640370788719865
317698293675847
65213.404
30547715320681004123124314779691511328361523151712989949
38444367554976707313319
73239.794
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2022-02-06T16:51:49Lisander ViaeneManual testing5000050000-
skipped known factor: 87977377
skipped known factor: 6898892569
--0.001--0.400%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2008-07-21T09:16:00J FeitsmaManual testing??32.684108.31918e-100.0051.72945e-9


ECM factoring results:

Old Calculation Method

Total ECM effort:16.651 GHz-days
Estimated T-Level:27.688
DigitsB1CurvesCompleteFacMiss
2011000625 / 1006.2500.187%
2550000625 / 2802.23210.687%
30250000344 / 6400.53858.396%

New Calculation Method

Total ECM effort:16.651 GHz-days
Estimated T-Level:27.688
DigitsB1CompleteFacMiss
201100037.7310.000%
25500005.1860.560%
302500000.52359.249%
3510000000.04295.902%
4030000000.00399.726%


ECM Summary

B1B2factorcurvesGHz-days
5000050000002812.145
250000250000001064.045
25000025000000381.450
25000038500000673.019
250000385000001335.993


Lucas-Lehmer results:
No L-L results for M305477


PRP results:
dateuseridcompidcofactorsres64PRP
2017-09-22T15:35:39Oliver KruseOllaptop
87977377
6898892569
4365706DA648FC__no
2017-09-22T20:37:24Oliver KruseManual testing
87977377
6898892569
4365706DA648FC__no
2017-10-12T22:29:02Oliver KruseGTX-24365706DA648FC__no
2017-12-11T08:25:47ATHxps
87977377
6898892569
4365706DA648FC__no
2019-04-06T10:00:11treborLaptop
87977377
6898892569
136013686435728003033552383
DACBB62CD1FE7C6Bno
2019-04-07T09:38:51kkmrkkblmbrbkc5.large
87977377
6898892569
136013686435728003033552383
DACBB62CD1FE7C6Bno
2019-04-07T10:17:37matzetonibobuba
87977377
6898892569
136013686435728003033552383
DACBB62CD1FE7C6Bno
2021-09-08T23:23:21H Michaelson
87977377
6898892569
136013686435728003033552383
18558593823607885142975692961
DACBB62CD1FE7C6Bno


P-1 factor-bounds graph:
B1 = 50000 (P-1 stage 1)
100
101
102
103
104
105
100
101
102
103
104
105
106
107
108
109
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
TF factor-bounds graph:
267
2
220
230
240
250
260
270
280
290
2100
Last modified: 2022-02-06T16:51:49+00:00