is 2 2310083 - 1
has 695405 decimal digits
takes 0.156 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L98F916661FA9B4B9double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual26712.862767.1642%50000005000000003.131510.9610%15.994270.7633%3.5991%
PrimeNet2580.016662.0690%100001900000.00192.9303%0.018663.1805%1.1115%
GPU722620.265964.5161%120002000000.00221.7390%0.268165.1332%0.6171%
Difference+5+12.5968+2.6481%+4988000+499800000+3.1294+9.2220%+15.7261+5.6301%+5.6301%

Known prime factors (1 factor, 65.9 bits, 0.00285482% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
2310083712152090723659932492065.94915413993582128
24 × 19 × 50703926257
2015-06-1519507039262573.8500270.60505.41

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2003-09-14T00:00:00ANONYMOUSv4_computers2048204800---0.001--0.284%
2010-02-15T08:04:00Budannan50000010000000---0.100--4.823%
2018-02-23T18:15:27alpertronManual testing5000001500000012---0.126--5.213%
2021-05-03T08:42:53ViliamF35000000500000000---3.132--10.961%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2009-01-14T23:34:00Sturle Sundebakeng.ifi260261--0.066--
2012-05-23T07:31:00Sebastian HornbostelManual testing261262--0.133--
2013-01-23T08:26:00dbaughManual testing262263--0.425--
2015-03-03T21:35:00VictordeHollanderManual testing263264--0.850--
2015-03-03T21:35:00VictordeHollanderManual testing264265--1.617--


ECM factoring results:

Old Calculation Method

Total ECM effort:1.328 GHz-days
Estimated T-Level:0.750
DigitsB1CurvesCompleteFacMiss
201100015 / 1000.15086.006%
255000015 / 2800.05494.775%

New Calculation Method

Total ECM effort:1.328 GHz-days
Estimated T-Level:0.750
DigitsB1CompleteFacMiss
20110000.48461.639%
25500000.04495.721%
302500000.00399.731%


ECM Summary

B1B2factorcurvesGHz-days
500005000000121.062
50000500000030.266


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1999-03-01T00:00:00ANONYMOUSv4_computers98F916661FA9B4B90.156


PRP results:
dateuseridcompidcofactorsres64PRP
2017-10-11T15:42:38Oliver KruseGTX-1
71215209072365993249
42AEB950689BDC__no
2017-11-23T00:32:45kkmrkkblmbrbkc4.xlarge
71215209072365993249
42AEB950689BDC__no


P-1 factor-bounds graph:
B1 = 5000000, B2 = 500000000 (P-1 stage 2)
B1 = 5000000 (P-1 stage 1)
B1 = 500000, B2 = 15000000 (P-1 stage 2)
B1 = 500000, B2 = 10000000 (P-1 stage 2)
B1 = 500000 (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: 2021-05-03T08:42:53+00:00