is 2 4323691 - 1
has 1301561 decimal digits
takes 0.539 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-LA6BAACC264AEE1A8double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual273442.410068.4932%440000132000000.20532.9707%442.615369.4291%0.9360%
PrimeNet2610.071062.2951%180003600000.00662.9286%0.077763.3993%1.1042%
GPU722651.687464.6154%240005000000.00901.9837%1.696465.3173%0.7019%
Difference+8+440.7227+3.8778%+416000+12700000+0.1963+0.9870%+440.9189+4.1118%+4.1118%

Known prime factors:
No known factors for M4323691

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2001-06-03T00:00:00Team_Deutschlandv4_computers20000180000---0.005--0.412%
2010-09-01T17:57:00markrtiny950002090000---0.037--1.425%
2016-12-24T16:54:39Squeeky_SquirrelP4_2600265000775125012---0.122--2.431%
2021-06-13T04:39:25Dylan DelgadoManual testing4400001320000012---0.205--2.971%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1998-02-01T00:00:00Sturle Sundev4_computers21260--0.036--
1998-09-13T00:00:00ANONYMOUSv4_computers21261--0.071--
2010-12-06T20:25:00markroldgamer261262--0.071--
2012-01-08T22:25:00GrunwalderGIMPManual testing21263--0.369--
2016-02-23T16:29:53Mark RoseManual testing262263--0.227--
2014-05-29T22:24:00JayderManual testing263264--0.454--
2014-05-30T07:44:00lycornManual testing264265--0.864--
2015-06-15T10:06:00snme2pm1Manual testing265266--1.728--
2018-04-30T04:51:03chuenkitManual testing266267--3.457--
2018-10-24T03:13:30chuenkitManual testing267268--6.913--
2021-01-26T02:19:37-Anonymous-Manual testing268269--13.83--
2021-01-26T02:19:38-Anonymous-Manual testing269270--27.65--
2021-01-30T18:20:09-Anonymous-Manual testing270271--55.31--
2021-01-30T18:20:09-Anonymous-Manual testing271272--110.6--
2021-02-10T11:27:35-Anonymous-Manual testing272273--221.2--


ECM factoring results:

Old Calculation Method

Total ECM effort:2.197 GHz-days
Estimated T-Level:0.600
DigitsB1CurvesCompleteFacMiss
201100012 / 1000.12088.638%
255000012 / 2800.04395.797%

New Calculation Method

Total ECM effort:2.197 GHz-days
Estimated T-Level:0.600
DigitsB1CompleteFacMiss
20110000.46263.031%
25500000.04395.819%
302500000.00399.731%


ECM Summary

B1B2factorcurvesGHz-days
500005000000122.197


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1998-11-21T00:00:00ANONYMOUSv4_computers8A209C03784978__0.539
1999-11-04T00:00:00ANONYMOUSv4_computersA6BAACC264AEE1A80.539
2001-07-03T00:00:00Team_Deutschlandv4_computersA6BAACC264AEE1A80.539


PRP results:
No PRP results for M4323691


P-1 factor-bounds graph:
B1 = 440000, B2 = 13200000 (P-1 stage 2)
B1 = 265000, B2 = 7751250 (P-1 stage 2)
B1 = 440000 (P-1 stage 1)
B1 = 265000 (P-1 stage 1)
B1 = 95000, B2 = 2090000 (P-1 stage 2)
B1 = 95000 (P-1 stage 1)
B1 = 20000, B2 = 180000 (P-1 stage 2)
B1 = 20000 (P-1 stage 1)
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TF factor-bounds graph:
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Last modified: 2021-06-13T04:39:25+00:00