is 2 959183 - 1
has 288743 decimal digits
takes 0.023 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-LC1CBD3A1F3FF52CAdouble-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual26862.141370.5882%5000000012636914390102,422.579221.9200%2,484.720577.0353%6.4471%
PrimeNet2400.000050.0000%90004000000.001123.9468%0.001161.9734%11.9734%
GPU722440.000054.5455%160006500000.001818.3957%0.001862.9071%8.3617%
Difference+24+62.1413+16.0428%+49984000+1263690789010+2,422.5774+3.5244%+2,484.7187+14.1282%-1.9146%

Known prime factors (1 factor, 128.4 bits, 0.01338815% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
95918345427097485243883669083180440249438727139128.417236800993581224248496288927348845
5 × 7 × 13 × 2969 × 11213 × 169607 × 11854411 × 7775285611
2022-09-191185441177752856111.516e+1115.29027.821

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2002-01-08T00:00:00ANONYMOUSv4_computers2000200000---0.000--0.172%
2002-02-24T00:00:00ANONYMOUSv4_computers4096409600---0.001--0.376%
2002-05-05T00:00:00ANONYMOUSv4_computers8192819200---0.002--0.690%
2002-05-11T00:00:00Jocelyn Larouchev4_computers50005000---0.000--0.049%
2002-05-11T00:00:00Jocelyn Larouchev4_computers60006000---0.000--0.061%
2002-05-25T00:00:00ANONYMOUSv4_computers163841638400---0.004--1.135%
2002-08-03T00:00:00ANONYMOUSv4_computers327683276800---0.007--1.721%
2003-01-16T00:00:00ANONYMOUSv4_computers655366553600---0.015--2.446%
2003-09-21T00:00:00ANONYMOUSv4_computers13107213107200---0.029--3.297%
2011-06-05T12:40:00Jocelyn LaroucheManual testing200000200000---0.007--1.024%
2011-07-14T16:35:00Jocelyn LaroucheManual testing210400210400---0.007--1.052%
2011-09-19T22:50:00Jocelyn LaroucheManual testing350668350668---0.012--1.362%
2012-02-06T21:53:00Jocelyn LaroucheManual testing701336701336---0.025--1.863%
2013-10-23T13:08:00David Campeaui5-2500k85000025500000---0.077--5.010%
2014-08-31T13:09:00alpertronManual testing10000000500000000---1.290--9.876%
2022-09-18T15:31:15axnManual testing50000000126369143901039128.4172,4230.0474,84521.920%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2000-06-28T00:00:00ANONYMOUSv4_computers21255--0.005--
2000-11-15T00:00:00ANONYMOUSv4_computers21256--0.010--
2001-11-17T00:00:00ANONYMOUSv4_computers21257--0.020--
2003-08-25T00:00:00ANONYMOUSv4_computers21258--0.040--
2016-02-23T16:28:18Mark RoseManual testing258260--0.120--
2010-05-18T12:50:00Architects Cubeda3_bu2260261--0.160--
2013-12-11T02:50:00lycornsnail261262--0.320--
2015-04-01T19:04:00snme2pm1Manual testing262263--1.023--
2015-04-01T19:04:00snme2pm1Manual testing263264--2.047--
2015-04-01T19:04:00snme2pm1Manual testing264265--3.895--
2018-04-24T19:10:03BloodERazorManual testing265266--7.791--
2018-10-18T21:45:29BloodERazorManual testing266267--15.58--
2022-02-21T20:41:01Gordon SpenceManual testing267268--31.16--


ECM factoring results:
Total ECM effort:14.149 GHz-days
Estimated T-Level:25.656
DigitsB1CompleteFacMiss
201100014.7690.000%
25500001.61619.866%
302500000.13187.697%
3510000000.00999.130%


ECM Summary

B1B2factorcurvesGHz-days
5000050000002807.923
25000025000000446.226


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2001-12-22T00:00:00ANONYMOUSv4_computersC1CBD3A1F3FF52CA0.023
2015-04-11T21:21:00MadPooManual testingC1CBD3A1F3FF52CA0.023


PRP results:
dateuseridcompidcofactorsres64PRP
2022-09-24T16:02:53ATHec2-PRPCF
454270974852438836690831804402494387271
D8CAA10EBE205D76no


P-1 factor-bounds graph:
B1 = 50000000, B2 = 1263691439010 (P-1 stage 2)
B1 = 50000000 (P-1 stage 1)
B1 = 10000000, B2 = 500000000 (P-1 stage 2)
B1 = 10000000 (P-1 stage 1)
B1 = 850000, B2 = 25500000 (P-1 stage 2)
B1 = 850000 (P-1 stage 1)
B1 = 131072, B2 = 13107200 (P-1 stage 2)
B1 = 701336 (P-1 stage 1)
B1 = 65536, B2 = 6553600 (P-1 stage 2)
B1 = 350668 (P-1 stage 1)
B1 = 210400 (P-1 stage 1)
B1 = 32768, B2 = 3276800 (P-1 stage 2)
B1 = 200000 (P-1 stage 1)
B1 = 131072 (P-1 stage 1)
B1 = 16384, B2 = 1638400 (P-1 stage 2)
B1 = 65536 (P-1 stage 1)
B1 = 8192, B2 = 819200 (P-1 stage 2)
B1 = 32768 (P-1 stage 1)
B1 = 4096, B2 = 409600 (P-1 stage 2)
B1 = 16384 (P-1 stage 1)
B1 = 2000, B2 = 200000 (P-1 stage 2)
B1 = 8192 (P-1 stage 1)
B1 = 6000 (P-1 stage 1)
B1 = 5000 (P-1 stage 1)
B1 = 4096 (P-1 stage 1)
B1 = 2000 (P-1 stage 1)
102
103
104
105
106
107
108
102
103
104
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107
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109
1010
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1013
TF factor-bounds graph:
268
267
266
265
264
263
262
261
260
258
257
256
255
250
260
270
280
290
2100
2110
2120
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Last modified: 2022-09-24T16:02:53+00:00