is 2 4842923 - 1
has 1457866 decimal digits
takes 0.671 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
Actual2676.135565.6716%----6.135565.6716%0.0000%
PrimeNet2610.063462.2951%200004500000.00873.2295%0.072263.5128%1.2177%
GPU722651.506564.6154%320006500000.01322.3257%1.519765.4383%0.8229%
Difference+2+4.6291+1.0563%-32000-650000-0.0132-2.3257%+4.6159+0.2333%+0.2333%

Known prime factors (5 factors, 270.5 bits, 0.00558573% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
48429239685847723.2071
1
-112.308e-132.010e-74.090e-7
4842923159332166711133.8911645
5 × 7 × 47
2008-09-087473.204e-101.845e-62.863e-6
484292373854512598284091652.714762499348
22 × 13 × 14663449
2014-08-2113146634490.00010.16060.2999
48429231545096995345996948460492477.03215952111930604688
24 × 3 × 3137 × 47431 × 2233573
2021-07-204743122335739,258.70.03350.0457
4842923153711178232674788203864412683.6681586966984945608140
22 × 32 × 5 × 7 × 2069 × 17939 × 33934279
2021-07-201793933934279514,8110.37500.6940

26 Composite Factors:
exponentprime factorscomposite factordigitsbits*
48429231543266988931553371857.099
4842923715343509286552158274232375.921
48429231176739951359559588782064392786.605
4842923149655730970810385052551916850331100.239
484292314888229545514183993000354840052733106.876
4842923113977231276561361643259920256883334109.812
4842923246183652045588479923258070528287934110.923
484292324491135075359062523312065640355791136117.560
4842923114112385508351825604352659683341160604140129.746
48429232384497187614807041499249412652205771351341134.131
484292311352264149282171329263406441209673020236942136.382
4842923237217387196261349664234601046443218158561743140.767
48429231105275106838913004974442395735910930413740172747152.953
4842923109956293653532271323031977488371387794042517154349159.589
4842923237498679638398824678824318337895850885818202160949160.700
48429231818177363149250117452556447429800961117734550951150163.637
484292318087808439693832490649793765933074357249749544935
99
52170.273
484292323003758736795463408189164873001535136148495759455
467823
56183.908
484292317610587758327074802377491508668595349839325847126
0590817
57186.844
484292317519574511218318834806283299838157046394441488056
962393353
59193.481
484292337841179217550244051194498496215731823956486961453
001043639
59194.592
484292317540349227429963081689096644617898740655202703308
051966070090081
65213.414
484292336652387220077137869253007967607565743987346736612
8665799527677233
66217.799
484292316989313894345482562488909166798234066347897313822
8185211404083800783607
72236.622
484292327947418472564905825808324949695606663959738117523
2120434322285633060940351
75247.305
484292327069441937023737539818808678903434271929443756639
78508012419207332126409915912297
82270.513
P-1 results:
No P-1 results for M4842923


P+1 Factoring results:
dateuseridcompidb1b2startfactorSmoothdigitsbits*ghz-days
2021-07-20T08:42:19ATHec2-P_15000005000000027P+1P-12477.0320.650
2021-07-20T08:42:19ATHec2-P_15000005000000027P-12683.6680.650


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2008-09-08T00:15:00Will EdgingtonManual testing??33.891118.41337e-111.4281.78936e-10
2014-08-21T11:33:00TJAOIManual testing??52.714161.84486e-51.4273.92296e-5


ECM factoring results:

Old Calculation Method

Total ECM effort:0.627 GHz-days
Estimated T-Level:0.150
DigitsB1CurvesCompleteFacMiss
20110003 / 1000.03097.030%
25500003 / 2800.01198.932%

New Calculation Method

Total ECM effort:0.627 GHz-days
Estimated T-Level:0.150
DigitsB1CompleteFacMiss
20110000.09790.776%
25500000.00999.129%


ECM Summary

B1B2factorcurvesGHz-days
50000500000030.627


Lucas-Lehmer results:
No L-L results for M4842923


PRP results:
dateuseridcompidcofactorsres64PRP
2017-11-20T08:58:22kkmrkkblmbrbkc4.xlarge
9685847
15933216671
7385451259828409
C2BD514719F18D__no
2018-03-30T15:32:04krackerGRID-11
9685847
15933216671
7385451259828409
C2BD514719F18D__no
2021-07-20T09:57:29ATHec2-PRPCF
9685847
15933216671
7385451259828409
154509699534599694846049
15371117823267478820386441
C2BD514719F18D0Bno


P-1 factor-bounds graph:
B1 = 500000, B2 = 50000000 (P+1 stage 2)
B1 = 500000 (P+1 stage 1)
100
101
102
103
104
105
106
100
101
102
103
104
105
106
107
108
TF factor-bounds graph:
267
2
220
230
240
250
260
270
280
290
2100
Last modified: 2021-07-20T09:57:29+00:00