is 2 7231183 - 1
has 2176803 decimal digits
takes 1.577 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
factored, 0 LL tests remaining
ResidueStatus
L-LE59B2BE6C145A5EBdouble-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual273264.527268.4932%1600000016143964200282.885512.6378%547.412672.4749%3.9818%
Target2674.109165.6716%4500010000000.03072.3121%4.139866.4654%0.7937%
Difference+6+260.4180+2.8215%+15955000+16142964200+282.8548+10.3257%+543.2728+6.0096%+3.1881%

Known prime factors (1 factor, 132.7 bits, 0.00183547% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
7231183900526864711916347018833406918040485363940132.726622669115628740378316268172799693
33 × 7 × 191 × 2153 × 4583 × 759559 × 4304371 × 534683837
2023-01-0143043715346838372.070e+1010.49717.203

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2003-02-16T00:00:00shaneamyv4_computers40000530000---0.021--0.834%
2012-07-28T21:27:00Squeeky_SquirrelP4_2600850001593750---0.053--1.407%
2020-01-17T15:03:47storm55107700_Kaby_Lake385000847000012---0.261--2.836%
2022-11-28T19:45:00yoyorocks1Manual testing160000001614396420040132.726282.93.154565.812.638%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1998-07-05T00:00:00ANONYMOUSv4_computers21262--0.085--
2005-11-01T00:00:00ANONYMOUSv4_computers21263--0.221--
2013-11-03T11:13:00NesowaManual testing263264--0.272--
2013-11-14T12:28:00David CampeauManual testing264265--0.517--
2015-06-16T01:49:00VictordeHollanderManual testing265266--1.033--
2016-10-13T23:59:18Gordon SpenceManual testing266267--2.067--
2018-07-23T10:43:50ramgeisManual testing267268--4.134--
2020-03-27T10:19:01TJAOIManual testing268269--8.267--
2020-11-23T04:34:57Smok_bmvManual testing269270--16.53--
2020-11-23T04:34:57Smok_bmvManual testing270271--33.07--
2020-11-23T04:34:57Smok_bmvManual testing271272--66.14--
2021-12-27T11:35:17-Anonymous-Manual testing272273--132.3--


ECM factoring results:
Total ECM effort:1.989 GHz-days
Estimated T-Level:1.154
DigitsB1CompleteFacMiss
20110000.23179.392%
25500000.02197.887%
302500000.00199.865%


ECM Summary

B1B2factorcurvesGHz-days
50000500000061.989


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1999-05-30T00:00:00ANONYMOUSv4_computersE59B2BE6C145A5EB1.577
2003-02-16T00:00:00shaneamyv4_computersE59B2BE6C145A5EB1.577


PRP results:
dateuseridcompidcofactorsres64PRP
2023-01-06T13:36:48Perigbruthcharraig
9005268647119163470188334069180404853639
0165E605040FA28Eno


P-1 factor-bounds graph:
B1 = 16000000, B2 = 16143964200 (P-1 stage 2)
B1 = 16000000 (P-1 stage 1)
B1 = 385000, B2 = 8470000 (P-1 stage 2)
B1 = 385000 (P-1 stage 1)
B1 = 85000, B2 = 1593750 (P-1 stage 2)
B1 = 85000 (P-1 stage 1)
B1 = 40000, B2 = 530000 (P-1 stage 2)
B1 = 40000 (P-1 stage 1)
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TF factor-bounds graph:
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Last modified: 2023-01-06T13:36:48+00:00