is 2 11783 - 1
has 3548 decimal digits
takes 0.000 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L-unknown--unknown-
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual2672,521.761779.1045%100000000100000000000.182812.1827%2,521.944581.6501%
Target2440.000268.1818%500100000.00001.3289%0.000268.6047%
Difference+23+2,521.7615+10.9227%+99999500+9999990000+0.1828+10.8538%+2,521.9443+13.0455%

Known prime factors (5 factors, 228.8 bits, 1.94162925% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
1178323567514.5241
1
-111.853e-132.860e-105.820e-10
1178325451281824.6011080
23 × 33 × 5
2008-08-2627272.340e-107.721e-91.571e-8
117834892717539911238.83220761765
5 × 4152353
2008-08-26541523535.869e-66.470e-50.0001
1178347129260154172350171962.031199988373734076
22 × 3 × 193 × 269761 × 320101
2008-08-2626976132010174.4287.793e-50.0002
117835363425015728577885543413772788.79322759165814005677185536
29 × 11 × 251 × 263 × 61215897874771
2008-10-16512612158978747719.069e+9953.781,781.4

26 Composite Factors:
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2016-09-07kkmrkkblmbrbkManual testing1000000001000000000012-
skipped known factor: 23567
skipped known factor: 25451281
skipped known factor: 489271753991
skipped known factor: 4712926015417235017
--0.183--12.183%
2021-08-27Seth_TrManual testing400000000400000000-
skipped known factor: 23567
skipped known factor: 25451281
skipped known factor: 489271753991
skipped known factor: 4712926015417235017
--0.114--7.727%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2008-08-26ANONYMOUSManual testing??24.60184.43414e-110.0003.88935e-9
2008-08-26ANONYMOUSManual testing??38.832122.76133e-60.0000.000
2011-02-05Oscar Östlinv4_computers??77.95824829,9054.93874e-61,763,733


ECM factoring results:
Total ECM effort:58.213 GHz-days
Estimated T-Level:40.546
DigitsB1CompleteFacMiss
20110001,222.3960.000%
2550000291.0800.000%
3025000053.9600.000%
3510000008.1060.030%
4030000001.01036.431%
45110000000.10989.655%
50440000000.01098.976%


ECM Summary

B1B2factorcurvesGHz-days
10.00000e+0
10.00000e+0
5000050000003100.064
25000025000000580.060
10000001000000002,62510.80
100000015000000000.00000e+0
100000022309290830.017
2000000200000000420.346
30000003000000003,80146.92


Lucas-Lehmer results:
No L-L results for M11783


PRP results:
dateuseridcompidcofactorsres64PRP
2017-09-21Oliver KruseOliver-PC
23567
25451281
489271753991
4712926015417235017
536342501572857788554341377
3E382C2AD4324C28no
2017-09-21Oliver KruseManual testing
23567
25451281
489271753991
4712926015417235017
536342501572857788554341377
3E382C2AD4324C28no
2017-10-02kkmrkkblmbrbkManual testing
23567
25451281
489271753991
4712926015417235017
536342501572857788554341377
3E382C2AD4324C__no
2017-12-07ATHManual testing
23567
25451281
489271753991
4712926015417235017
536342501572857788554341377
3E382C2AD4324C__no
2020-04-17Oliver KruseManual testing
23567
25451281
489271753991
4712926015417235017
536342501572857788554341377
822A94CD4BDC82__no
2022-05-12Jorge CoveiroManual testing
23567
822A94CD4BDC8225no


P-1 factor-bounds graph:
B1 = 100000000, B2 = 10000000000 (P-1 stage 2)
B1 = 400000000 (P-1 stage 1)
B1 = 100000000 (P-1 stage 1)
100
101
102
103
104
105
106
107
108
109
100
101
102
103
104
105
106
107
108
109
1010
1011
1012
1013
1014
TF factor-bounds graph:
2
this exponent TF target: 44
TF double-checked to: 67.7
ECM T-Level=40.55 ~= 118-bit
250
260
270
280
290
2100
2110
2120
Last modified: 2023-03-25T13:08:14+00:00