is 2 2385023 - 1
has 717964 decimal digits
takes 0.161 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L44EED5A74CA4715Adouble-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual26950.056968.1159%30000001000000000.81157.2246%50.868470.4194%2.3035%
PrimeNet2590.032262.7119%100001700000.00182.4767%0.034063.6354%0.9235%
GPU722630.669265.0794%100001400000.00171.2732%0.670965.5240%0.4446%
Difference+6+49.3877+3.0366%+2990000+99860000+0.8099+5.9514%+50.1976+4.8955%+4.8955%

Known prime factors:
No known factors for M2385023

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2003-09-21T00:00:00ANONYMOUSv4_computers2048204800---0.001--0.187%
2010-11-08T01:30:00Jocelyn LaroucheManual testing1500015000---0.001--0.169%
2010-11-15T22:51:00Jocelyn LaroucheManual testing2000020000---0.002--0.218%
2010-12-26T16:49:00markrtiny1000002075000---0.020--2.150%
2014-09-15T22:12:00ANONYMOUSManual testing126911126911---0.012--0.814%
2015-10-30T13:11:55mikrMSI300000010000000012---0.812--7.225%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1999-03-01T00:00:00ANONYMOUSv4_computers21259--0.032--
2016-02-23T16:29:13Mark RoseManual testing259260--0.032--
2009-01-15T17:37:00Sturle Sundegoldiek.ifi260261--0.064--
2012-06-01T12:43:00Sebastian HornbostelManual testing261262--0.129--
2013-12-04T21:14:00Jerry HallettManual testing262263--0.412--
2015-03-09T12:36:00VictordeHollanderManual testing263264--0.823--
2015-03-09T12:36:00VictordeHollanderManual testing264265--1.567--
2015-11-01T21:51:05ramgeisManual testing265266--3.133--
2017-06-22T00:32:49Gordon SpenceManual testing266267--6.266--
2019-03-18T11:45:39TJAOIManual testing267268--12.53--
2021-07-05T07:39:53TJAOIManual testing268269--25.07--


ECM factoring results:

Old Calculation Method

Total ECM effort:15.942 GHz-days
Estimated T-Level:23.143
DigitsB1CurvesCompleteFacMiss
2011000176 / 1001.76017.053%
2550000176 / 2800.62953.275%

New Calculation Method

Total ECM effort:15.942 GHz-days
Estimated T-Level:23.143
DigitsB1CompleteFacMiss
20110006.8370.107%
25500000.63353.116%
302500000.04096.083%
3510000000.00299.813%


ECM Summary

B1B2factorcurvesGHz-days
50000500000015513.79
500006750000141.427
50000705000070.729


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1999-03-26T00:00:00ANONYMOUSv4_computers44EED5A74CA4715A0.161
2018-05-15T19:15:15kkmrkkblmbrbkold44EED5A74CA4715A0.161


PRP results:
No PRP results for M2385023


P-1 factor-bounds graph:
B1 = 3000000, B2 = 100000000 (P-1 stage 2)
B1 = 3000000 (P-1 stage 1)
B1 = 100000, B2 = 2075000 (P-1 stage 2)
B1 = 126911 (P-1 stage 1)
B1 = 100000 (P-1 stage 1)
B1 = 20000 (P-1 stage 1)
B1 = 15000 (P-1 stage 1)
B1 = 2048, B2 = 204800 (P-1 stage 2)
B1 = 2048 (P-1 stage 1)
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108
TF factor-bounds graph:
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Last modified: 2022-06-05T21:14:02+00:00