is 2 2369351 - 1
has 713246 decimal digits
takes 0.160 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L9060B9358256A6F3double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual26712.541067.1642%30000001000000000.81158.4957%13.352569.9538%2.7896%
PrimeNet2590.032462.7119%100001700000.00182.4736%0.034263.6342%0.9224%
GPU722630.673665.0794%100001400000.00171.2715%0.675365.5234%0.4440%
Difference+4+11.8673+2.0848%+2990000+99860000+0.8099+7.2243%+12.6772+4.4305%+4.4305%

Known prime factors (1 factor, 90.0 bits, 0.00379718% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
236935112112014761616716912895557932889.968255597730383060950296
23 × 2467 × 12950837575144961
2016-05-1524671295083757514496168,215,50069,117,181129,091,647

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2003-09-21T00:00:00ANONYMOUSv4_computers2048204800---0.001--0.286%
2010-11-04T00:49:00Jocelyn LaroucheManual testing2000020000---0.002--0.310%
2010-12-29T17:11:00markrtiny1000002025000---0.020--2.711%
2014-09-10T00:51:00Jocelyn LaroucheManual testing127089127089---0.012--1.074%
2015-09-22T23:43:00mikrMSI3000000100000000---0.812--8.496%
2018-04-27T12:00:21alpertronManual testing20000006000000012---0.505--7.605%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1999-03-01T00:00:00curtiscv4_computers21259--0.032--
2016-02-23T16:29:13Mark RoseManual testing259260--0.032--
2009-01-11T17:21:00Sturle Sundegehry.ifi260261--0.065--
2012-05-31T09:43:00Sebastian HornbostelManual testing261262--0.130--
2013-12-04T21:14:00Jerry HallettManual testing262263--0.414--
2015-03-09T12:35:00VictordeHollanderManual testing263264--0.829--
2015-03-09T12:35:00VictordeHollanderManual testing264265--1.577--
2015-10-30T09:42:39ramgeisManual testing265266--3.154--


ECM factoring results:

Old Calculation Method

Total ECM effort:1.688 GHz-days
Estimated T-Level:0.950
DigitsB1CurvesCompleteFacMiss
201100019 / 1000.19082.617%
255000019 / 2800.06893.428%

New Calculation Method

Total ECM effort:1.688 GHz-days
Estimated T-Level:0.950
DigitsB1CompleteFacMiss
20110000.61354.178%
25500000.05594.611%
302500000.00399.659%


ECM Summary

B1B2factorcurvesGHz-days
500005000000181.599
50000500000010.089


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1999-03-26T00:00:00curtiscv4_computers9060B9358256A6F30.160


PRP results:
dateuseridcompidcofactorsres64PRP
2017-10-12T11:57:31Oliver KruseGTX-0D715758E37367E__no
2017-11-25T04:03:20kkmrkkblmbrbkc4.xlarge
1211201476161671691289555793
D715758E37367E__no


P-1 factor-bounds graph:
B1 = 3000000, B2 = 100000000 (P-1 stage 2)
B1 = 2000000, B2 = 60000000 (P-1 stage 2)
B1 = 3000000 (P-1 stage 1)
B1 = 2000000 (P-1 stage 1)
B1 = 100000, B2 = 2025000 (P-1 stage 2)
B1 = 127089 (P-1 stage 1)
B1 = 100000 (P-1 stage 1)
B1 = 20000 (P-1 stage 1)
B1 = 2048, B2 = 204800 (P-1 stage 2)
B1 = 2048 (P-1 stage 1)
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TF factor-bounds graph:
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Last modified: 2018-04-27T12:00:21+00:00