is 2 2263067 - 1
has 681252 decimal digits
takes 0.149 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-LDD681FB60A6D9927double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual26952.754468.1159%1000000200000000.19404.9030%52.948569.6792%1.5633%
PrimeNet2580.017062.0690%100001900000.00192.9193%0.018963.1763%1.1073%
GPU722620.271564.5161%120001900000.00211.7067%0.273565.1217%0.6056%
Difference+7+52.4830+3.5998%+988000+19810000+0.1920+3.1963%+52.6749+4.5575%+4.5575%

Known prime factors:
No known factors for M2263067

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2010-11-07T01:16:00Jocelyn LaroucheManual testing1500015000---0.001--0.166%
2010-11-12T11:44:00Jocelyn LaroucheManual testing3000030000---0.003--0.302%
2011-01-04T10:15:00markrtiny1000002100000---0.020--2.139%
2014-09-02T00:10:00Jocelyn LaroucheManual testing128362128362---0.012--0.812%
2016-03-29T23:26:44Jocelyn LaroucheManual testing34214434214406---0.049--2.959%
2019-06-30T03:45:25BigBrotherWinston10000002000000012---0.194--4.903%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2016-02-23T16:29:10Mark RoseManual testing21260--0.068--
2009-01-11T10:10:00Sturle Sundegooch.ifi260261--0.068--
2012-05-05T15:48:00Sebastian HornbostelManual testing261262--0.136--
2013-12-06T02:46:00Jerry HallettManual testing262263--0.434--
2015-03-10T10:44:00VictordeHollanderManual testing263264--0.868--
2015-03-10T10:44:00VictordeHollanderManual testing264265--1.651--
2015-10-30T09:42:37ramgeisManual testing265266--3.302--
2017-01-16T00:47:36Gordon SpenceManual testing266267--6.604--
2019-05-06T12:23:30TJAOIManual testing267268--13.21--
2021-07-15T09:27:13TJAOIManual testing268269--26.42--


ECM factoring results:

Old Calculation Method

Total ECM effort:16.498 GHz-days
Estimated T-Level:23.339
DigitsB1CurvesCompleteFacMiss
2011000187 / 1001.87015.268%
2550000187 / 2800.66851.219%

New Calculation Method

Total ECM effort:16.498 GHz-days
Estimated T-Level:23.339
DigitsB1CompleteFacMiss
20110007.2780.069%
25500000.67351.020%
302500000.04295.841%
3510000000.00299.802%


ECM Summary

B1B2factorcurvesGHz-days
500005000030.152
50000500000016614.26
500006750000141.377
50000705000070.704


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1999-03-01T00:00:00ANONYMOUSv4_computersDD681FB60A6D99270.149
2018-04-24T17:41:54kkmrkkblmbrbkoldDD681FB60A6D99270.149


PRP results:
No PRP results for M2263067


P-1 factor-bounds graph:
B1 = 1000000, B2 = 20000000 (P-1 stage 2)
B1 = 1000000 (P-1 stage 1)
B1 = 342144, B2 = 3421440 (P-1 stage 2)
B1 = 342144 (P-1 stage 1)
B1 = 100000, B2 = 2100000 (P-1 stage 2)
B1 = 128362 (P-1 stage 1)
B1 = 100000 (P-1 stage 1)
B1 = 30000 (P-1 stage 1)
B1 = 15000 (P-1 stage 1)
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TF factor-bounds graph:
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Last modified: 2022-04-30T16:29:29+00:00