is 2 1186589 - 1
has 357199 decimal digits
takes 0.036 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L00983EE780987727double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual26725.041568.6567%300000100000000.03684.1552%25.078369.9591%1.3024%
PrimeNet2560.008162.5000%5000800000.00042.2648%0.008563.3493%0.8493%
GPU722600.129465.0000%5000280000.00030.8008%0.129765.2803%0.2803%
Difference+7+24.9120+3.6567%+295000+9972000+0.0366+3.3544%+24.9486+4.6788%+4.6788%

Known prime factors (1 factor, 60.2 bits, 0.00507745% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
118658913696355883858969831960.248577131419719
6337 × 91073287
2007-10-176337910732870.22240.22090.4121

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2002-05-05T00:00:00Jocelyn Larouchev4_computers10001000---4.44667e-5--0.005%
2002-06-15T00:00:00ANONYMOUSv4_computers500001000000---0.005--1.752%
unknown30000010000000---0.037--4.155%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2001-11-03T00:00:00ANONYMOUSv4_computers21257--0.016--
2003-05-11T00:00:00ANONYMOUSv4_computers21258--0.032--


ECM factoring results:

Old Calculation Method

Total ECM effort:18.443 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:18.443 GHz-days
Estimated T-Level:25.344
DigitsB1CompleteFacMiss
201100014.8080.000%
25500001.62019.795%
302500000.13287.678%
3510000000.00999.129%


ECM Summary

B1B2factorcurvesGHz-days
10.00000e+0
50000500000028110.34
25000025000000448.099


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2002-07-27T00:00:00ANONYMOUSv4_computers00983EE7809877270.036


PRP results:
dateuseridcompidcofactorsres64PRP
2017-09-29T11:22:01Oliver KruseGTX-1
1369635588385896983
CC33A39D4FBB8B__no
2017-10-17T17:43:12Oliver KruseThreadripper
1369635588385896983
CC33A39D4FBB8B__no
2018-01-02T23:55:19ATHec2-8x
1369635588385896983
CC33A39D4FBB8B__no


P-1 factor-bounds graph:
B1 = 300000, B2 = 10000000 (P-1 stage 2)
B1 = 300000 (P-1 stage 1)
B1 = 50000, B2 = 1000000 (P-1 stage 2)
B1 = 50000 (P-1 stage 1)
B1 = 1000 (P-1 stage 1)
102
103
104
105
106
102
103
104
105
106
107
108
TF factor-bounds graph:
267
258
257
250
260
270
280
290
2100
Last modified: 2020-11-27T10:32:42+00:00