is 2 1150921 - 1
has 346462 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-L60CCF4D89DCDDA1Bdouble-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual26725.817568.6567%300000100000000.03564.1389%25.853169.9540%1.2973%
PrimeNet2560.008362.5000%5000700000.00042.1633%0.008763.3112%0.8112%
GPU722600.133465.0000%5000260000.00030.7710%0.133765.2698%0.2698%
Difference+7+25.6841+3.6567%+295000+9974000+0.0353+3.3679%+25.7194+4.6841%+4.6841%

Known prime factors (1 factor, 63.1 bits, 0.00548135% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
115092197901561877704590311963.0864253183401715
5 × 19 × 44770351597
2008-06-1319447703515972.9283104.83195.79

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2000-11-15T00:00:00ANONYMOUSv4_computers500001000000---0.004--1.743%
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--


ECM factoring results:

Old Calculation Method

Total ECM effort:17.676 GHz-days
Estimated T-Level:25.344
DigitsB1CurvesCompleteFacMiss
2011000323 / 1003.2303.892%
2550000323 / 2801.15431.486%
3025000044 / 6400.06993.351%

New Calculation Method

Total ECM effort:17.676 GHz-days
Estimated T-Level:25.344
DigitsB1CompleteFacMiss
201100014.7310.000%
25500001.61319.937%
302500000.13187.717%
3510000000.00999.131%


ECM Summary

B1B2factorcurvesGHz-days
10.00000e+0
5000050000002799.88
25000025000000447.793


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2001-06-23T00:00:00ANONYMOUSv4_computers60CCF4D89DCDDA1B0.034


PRP results:
dateuseridcompidcofactorsres64PRP
2017-09-29T07:15:48Oliver KruseGTX-0
9790156187770459031
CDCB7B006C54C6__no
2017-10-17T06:02:59Oliver KruseThreadripper
9790156187770459031
CDCB7B006C54C6__no
2018-01-02T15:41:38ATHec2-1xf
9790156187770459031
CDCB7B006C54C6__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)
100
101
102
103
104
105
106
100
101
102
103
104
105
106
107
108
109
1010
1011
TF factor-bounds graph:
267
258
257
256
250
260
270
280
290
2100
Last modified: 2020-08-21T10:52:00+00:00