is 2 1249 - 1
has 376 decimal digits
takes 0.000 GHz-days to do one PRP test
Last-known PrimeNet details:
-unknown- L-L tests remaining
ResidueStatus
L-L-unknown--unknown-
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual26723,790.166283.5821%100000000000022328434186491000002,876,234.795343.3970%2,900,024.9614126.9791%54.4791%
PrimeNet2400.000172.5000%500100000.00001.7007%0.000174.2007%1.7007%
GPU722440.001975.0000%500100000.00000.6519%0.001975.6519%0.6519%
Difference+23+23,790.1643+8.5821%+999999999500+2232843418649090000+2,876,234.7953+42.7452%+2,900,024.9596+51.3273%+51.3273%

Known prime factors (4 factors, 166.3 bits, 13.31288157% known):
Remaining cofactor is not a probable-prime

GHz-days
exponentfactordigitsbits*kmin B1min B2date foundmin. TFmin. P-1normal P-1
124997423516.57239
3 × 13
313-7.049e-128.381e-111.444e-10
124952358081825.64220960
25 × 5 × 131
32131-5.500e-98.841e-101.540e-9
124923790052731031.148952364
22 × 72 × 43 × 113
49113-2.610e-71.241e-92.358e-9
124993452760459072727263640124812892.9163741103301003712060193760
25 × 5 × 450421 × 121523473 × 427170167
121523473427170167-1.349e+120.00330.0058

11 Composite Factors:
exponentprime factorscomposite factordigitsbits*
124951008813252631342.214
12492317698307114791547.720
12491245601507831611131856.790
1249121350235697479051117992373.362
124991044482822042423082056118793646333109.488
124948930072017897270389605780096520896136118.558
12492223246099085399188506907180973681231338124.064
12494766914406199605773166563914343355260750341135.130
1249216595304711196845141908418291998946596939943140.636
1249116404899338847356629178915240901660776585135346149.706
124911340514508288526024884497459514362497837253636331
9
51166.278
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2016-09-07T20:58:12kkmrkkblmbrbkManual testing100000000010000000000012---0.151--14.632%
2021-03-27T16:37:19nordiManual testing10000000000002.2328434186491E+18---2,876,235--43.397%
unknown10000000000002232843418649100000---2,876,235--43.397%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2005-01-20T00:00:00ANONYMOUSv4_computers??73.362231,110,9386.47901e-83,534,277
2009-10-25T00:00:00Carsten Kossendeyv4_computers??73.362231,110,9386.47901e-83,534,277


ECM factoring results:
Total ECM effort:24,496.923 GHz-days
Estimated T-Level:54.941
DigitsB1CurvesCompleteFacMiss
201100046980 / 100469.8000.000%
255000046980 / 280167.7860.000%
3025000046980 / 64073.4060.000%
35100000046980 / 158029.7340.000%
40300000046980 / 47009.9960.005%
451100000046969 / 97004.8420.789%
504400000046969 / 171002.7476.413%
5511000000045950 / 465000.98837.225%
6026000000036991 / 1120000.33071.872%
6580000000025687 / 3600000.07193.113%

ECM Summary

B1B2factorcurvesGHz-days
4400000044000000001,01915.25
110000000110000000008,958335.2
260000000260000000009,372829.0
26000000026000000000001,5984,693
26000000052000000000003341,942
8500000008500000000018,1605,252
29000000002900000000005,0164,949
50000000005000000000001525.52
76000000007600000000002,4966,454
various122.2705


Lucas-Lehmer results:
Exponent "1249" not found


PRP results:
dateuseridcompidcofactorsres64PRP
2017-09-25T08:10:48csabaofficeFBF2F417424708__?
2017-09-27T07:34:21Oliver KruseManual testing
97423
52358081
2379005273
9345276045907272726364012481
FBF2F417424708__no
2017-10-09T00:32:42Chang Chia-TchehomuraFBF2F417424708__?
2017-10-12T13:29:14kkmrkkblmbrbkManual testing
97423
52358081
2379005273
9345276045907272726364012481
FBF2F417424708__no
2020-04-17T12:30:31Oliver KruseIOS-1
97423
52358081
2379005273
9345276045907272726364012481
CE1166266BB625B0no
2020-08-12T10:14:45_p95holder_TFL16_PRPt11-E_b
97423
52358081
2379005273
9345276045907272726364012481
CE1166266BB625B0no


P-1 factor-bounds graph:
B1 = 1000000000000, B2 = 2.2328434186491E+18 (stage 2)
B1 = 1000000000000 (stage 1)
B1 = 1000000000, B2 = 100000000000 (stage 2)
B1 = 1000000000 (stage 1)
100
101
102
103
104
105
106
107
108
109
1010
1011
1012
100
101
102
103
104
105
106
107
108
109
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
TF factor-bounds graph:
267
2
210
220
230
240
250
260
270
280
290
2100
Last modified: 2021-03-27T16:37:19+00:00