is 2 1195189 - 1
has 359788 decimal digits
takes 0.037 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-LE95ADEFD05EB790Ddouble-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual26724.861368.6567%300000100000000.03684.1591%24.898169.9603%1.3036%
PrimeNet2560.008062.5000%5000800000.00042.2681%0.008463.3506%0.8506%
GPU722600.128565.0000%5000280000.00030.8021%0.128865.2808%0.2808%
Difference+7+24.7328+3.6567%+295000+9972000+0.0366+3.3569%+24.7693+4.6796%+4.6796%

Known prime factors (1 factor, 61.1 bits, 0.00511143% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
119518924563875295727925611961.0911027614682520
23 × 5 × 23 × 1116972481
2007-10-212311169724810.37502.70615.0542

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2002-05-11T00:00:00Jocelyn Larouchev4_computers10001000---4.44667e-5--0.005%
2002-09-22T00:00:00Jocelyn Larouchev4_computers40004000---0.000--0.049%
2002-09-22T00:00:00Jocelyn Larouchev4_computers50005000---0.000--0.065%
2002-09-29T00:00:00Jocelyn Larouchev4_computers80008000---0.000--0.111%
2002-10-07T00:00:00Jocelyn Larouchev4_computers1000010000---0.000--0.140%
2003-09-21T00:00:00ANONYMOUSv4_computers100001000000---0.003--0.991%
unknown30000010000000---0.037--4.159%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1999-07-27T00:00:00ANONYMOUSv4_computers21256--0.008--
2001-10-27T00:00:00ANONYMOUSv4_computers21257--0.016--
2003-05-19T00:00:00ANONYMOUSv4_computers21258--0.032--
2022-04-12T21:45:13LordJuliusManual testing21261--0.257--
2022-04-12T21:45:13LordJuliusManual testing26126261.091190.1180.0740.240
2022-04-12T21:45:13LordJuliusManual testing262263--0.821--
2022-04-12T21:45:13LordJuliusManual testing263264--1.643--


ECM factoring results:

Old Calculation Method

Total ECM effort:18.463 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:18.463 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
50000500000028110.36
25000025000000448.108


Lucas-Lehmer results:
No L-L results for M1195189


PRP results:
dateuseridcompidcofactorsres64PRP
2017-09-29T11:36:20csabaoffice
2456387529572792561
E7960D24A205E0__no
2017-10-17T20:22:03Oliver KruseGTX-1
2456387529572792561
E7960D24A205E0__no


P-1 factor-bounds graph:
B1 = 300000, B2 = 10000000 (P-1 stage 2)
B1 = 300000 (P-1 stage 1)
B1 = 10000, B2 = 1000000 (P-1 stage 2)
B1 = 10000 (P-1 stage 1)
B1 = 8000 (P-1 stage 1)
B1 = 5000 (P-1 stage 1)
B1 = 4000 (P-1 stage 1)
B1 = 1000 (P-1 stage 1)
100
101
102
103
104
105
106
100
101
102
103
104
105
106
107
108
109
1010
TF factor-bounds graph:
267
264
263
262
261
258
257
256
250
260
270
280
290
2100
Last modified: 2022-04-12T21:45:13+00:00