is 2 1150927 - 1
has 346464 decimal digits
takes 0.034 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-LBEABD5179C4A8A82double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual26725.817468.6567%500000100000000.04374.4273%25.861170.0444%1.3876%
PrimeNet2560.008362.5000%5000700000.00042.1633%0.008763.3112%0.8112%
GPU722600.133465.0000%5000260000.00030.7710%0.133765.2698%0.2698%
Difference+7+25.6839+3.6567%+495000+9974000+0.0435+3.6563%+25.7274+4.7745%+4.7745%

Known prime factors (1 factor, 72.3 bits, 0.00628201% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
115092758195774570519321869612272.3012528213108673240
23 × 32 × 5 × 2647 × 2653122097
2014-07-26264726531220971,327.46.212311.603

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2000-11-15T00:00:00ANONYMOUSv4_computers500001000000---0.004--1.743%
2012-02-02T02:17:00markrtiny50000010000000---0.044--4.427%
2016-03-17T19:01:57alpertronManual testing3000001000000012---0.036--4.139%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1999-07-12T00:00:00ANONYMOUSv4_computers21256--0.008--
2001-11-14T00:00:00ANONYMOUSv4_computers21257--0.017--
2003-05-04T00:00:00ANONYMOUSv4_computers21258--0.033--
2022-03-07T17:31:12LordJuliusManual testing258260--0.100--
2009-04-15T19:41:00Sturle Sundegraun.ifi260261--0.133--
2011-05-09T14:44:00XyzzyManual testing261262--0.267--
2012-10-07T08:33:00dbaughManual testing262263--0.853--


ECM factoring results:

Old Calculation Method

Total ECM effort:17.747 GHz-days
Estimated T-Level:25.344
DigitsB1CurvesCompleteFacMiss
2011000325 / 1003.2503.815%
2550000325 / 2801.16131.261%
3025000044 / 6400.06993.351%

New Calculation Method

Total ECM effort:17.747 GHz-days
Estimated T-Level:25.344
DigitsB1CompleteFacMiss
201100014.8080.000%
25500001.62019.795%
302500000.13287.678%
3510000000.00999.129%


ECM Summary

B1B2factorcurvesGHz-days
5000050000002799.88
50000500000020.071
25000025000000447.793


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2001-06-23T00:00:00ANONYMOUSv4_computersBEABD5179C4A8A820.034


PRP results:
dateuseridcompidcofactorsres64PRP
2017-09-29T07:14:48Oliver KruseGTX-1
5819577457051932186961
E12A58F4DC639D__no
2017-10-17T06:04:28Oliver KruseThreadripper
5819577457051932186961
E12A58F4DC639D__no
2018-01-02T15:46:35ATHec2-1xf
5819577457051932186961
E12A58F4DC639D__no


P-1 factor-bounds graph:
B1 = 500000, B2 = 10000000 (P-1 stage 2)
B1 = 300000, B2 = 10000000 (P-1 stage 2)
B1 = 500000 (P-1 stage 1)
B1 = 300000 (P-1 stage 1)
B1 = 50000, B2 = 1000000 (P-1 stage 2)
B1 = 50000 (P-1 stage 1)
102
103
104
105
106
102
103
104
105
106
107
108
109
1010
TF factor-bounds graph:
267
263
262
261
260
258
257
256
250
260
270
280
290
2100
Last modified: 2022-03-07T17:31:12+00:00