is 2 92821 - 1
has 27942 decimal digits
takes 0.000 GHz-days to do one PRP test
Last-known PrimeNet details:
-unknown- L-L tests remaining
ResidueStatus
L-L-unknown--unknown-
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual267320.120674.6269%10000000020000000000.655811.6593%320.776477.5852%20.0852%
PrimeNet2400.000057.5000%1000160000.00007.4452%0.000060.6642%3.1642%
GPU722440.000061.3636%900120000.00003.2821%0.000062.6317%1.2681%
Difference+23+320.1206+13.2632%+99999100+1999988000+0.6558+8.3772%+320.7764+14.9535%+14.9535%

Known prime factors (3 factors, 163.5 bits, 0.17610084% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
92821954942449929.8315144
23 × 643
-86438.579e-101.373e-72.104e-7
9282127846300011031.37515000
23 × 3 × 54
2008-08-266256253.843e-92.014e-64.099e-6
92821604206014454747632489752377758331102.25332546838239985974751928571
7 × 3105342439 × 1497273943641227
2021-04-24310534243914972739436412272.067e+12262,864490,939

4 Composite Factors:
exponentprime factorscomposite factordigitsbits*
9282126591613927138124491961.206
92821576981971143946103846716103020084132076740132.084
928211682490194635329914314686796166847306758341133.628
928211606681306883548610298627165799532979724825253076750163.459
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2016-12-18T02:56:53kkmrkkblmbrbkManual testing100000000200000000012---0.656--11.659%


P+1 Factoring results:
dateuseridcompidb1b2startfactorSmoothdigitsbits*ghz-days
2021-04-24T10:32:21nordisweet1640000000524000000027P+131102.2531.091


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2008-08-26T20:11:00ANONYMOUSManual testing??31.375107.60519e-100.0001.57519e-9


ECM factoring results:
Total ECM effort:13.842 GHz-days
Estimated T-Level:30.437
DigitsB1CurvesCompleteFacMiss
20110001027 / 10010.2700.003%
2550000997 / 2803.5612.824%
30250000723 / 6401.13032.285%
351000000138 / 15800.08791.634%

ECM Summary

B1B2factorcurvesGHz-days
110001100000300.015
5000050000002740.636
250000250000005856.787
10000001000000001386.404


Lucas-Lehmer results:
Exponent "92821" not found


PRP results:
dateuseridcompidcofactorsres64PRP
2017-09-21T20:44:14Oliver KruseOliver-PC
954942449
2784630001
66122DC5013484__no
2017-09-21T21:30:21Oliver KruseManual testing
954942449
2784630001
66122DC5013484__no
2017-10-13T09:00:24kkmrkkblmbrbkManual testing
954942449
2784630001
66122DC5013484__no
2020-04-17T15:22:21Oliver KruseAddPrpType5
954942449
2784630001
D605B0022EDE97__no
2021-04-24T18:49:46mnd9vv
954942449
2784630001
6042060144547476324897523777583
D605B0022EDE975Fno
2021-04-24T18:51:03Kirill Frolovshodan1
954942449
2784630001
6042060144547476324897523777583
D605B0022EDE975Fno
2021-04-24T22:56:13nordisweet16
954942449
2784630001
6042060144547476324897523777583
D605B0022EDE975Fno


P-1 factor-bounds graph:
B1 = 100000000, B2 = 2000000000 (stage 2)
B1 = 100000000 (stage 1)
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TF factor-bounds graph:
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Last modified: 2021-04-24T22:56:13+00:00