is 2 907267 - 1
has 273115 decimal digits
takes 0.022 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L4B6092F1B90B025Bdouble-checked
PRP95EF08D56B36C06CPRP-tested

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual26865.697270.5882%5000000012636914390102,422.579221.8521%2,488.276477.0153%6.4271%
PrimeNet2400.000050.0000%80003600000.001023.3380%0.001061.6690%11.6690%
GPU722440.000054.5455%150006000000.001618.0024%0.001762.7284%8.1829%
Difference+24+65.6972+16.0428%+49985000+1263690839010+2,422.5776+3.8497%+2,488.2747+14.2870%-1.7558%

Known prime factors (1 factor, 141.8 bits, 0.01562802% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
907267481285450604535566849480258806782494013451343141.7882652391471333882786707111902046379368
23 × 32 × 619 × 6421 × 104693 × 954829 × 9684659 × 9573797297
2022-06-30968465995737972971.964e+1118.66334.256

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2002-04-20T00:00:00ANONYMOUSv4_computers163841638400---0.004--1.123%
2002-07-14T00:00:00ANONYMOUSv4_computers327683276800---0.007--1.705%
2002-12-09T00:00:00ANONYMOUSv4_computers655366553600---0.015--2.424%
2003-07-30T00:00:00ANONYMOUSv4_computers13107213107200---0.029--3.271%
2011-06-07T02:11:00Jocelyn LaroucheManual testing200000200000---0.007--1.014%
2011-07-13T12:29:00Jocelyn LaroucheManual testing226142226142---0.008--1.083%
2011-09-11T15:19:00Jocelyn LaroucheManual testing376903376903---0.013--1.398%
2011-12-03T19:38:00Jocelyn LaroucheManual testing753807753807---0.027--1.905%
2013-10-08T10:31:00David Campeaui5-2500k93500026180000---0.081--5.056%
2014-05-09T11:33:00alpertronManual testing10000000500000000---1.290--9.828%
2022-06-30T08:19:52axnManual testing50000000126369143901043141.7882,4230.0444,84521.852%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2000-12-14T00:00:00ANONYMOUSv4_computers21256--0.011--
2001-09-30T00:00:00ANONYMOUSv4_computers21257--0.021--
2003-02-24T00:00:00ANONYMOUSv4_computers21258--0.042--
2016-02-23T16:28:16Mark RoseManual testing258260--0.127--
2010-06-12T06:20:00Architects Cubedm1_fw260261--0.169--
2015-01-30T11:15:00TJAOIManual testing261262--0.339--
2015-09-23T17:46:31Gordon SpenceManual testing262263--1.082--
2015-09-23T17:46:31Gordon SpenceManual testing263264--2.164--
2016-01-15T14:06:38lycornManual testing264265--4.118--
2017-07-09T03:28:51Smok_bmvManual testing265266--8.237--
2017-07-09T03:28:51Smok_bmvManual testing266267--16.47--
2017-07-09T03:28:51Smok_bmvManual testing267268--32.95--


ECM factoring results:
Total ECM effort:14.170 GHz-days
Estimated T-Level:25.655
DigitsB1CompleteFacMiss
201100014.7240.000%
25500001.61419.917%
302500000.13187.714%
3510000000.00999.131%


ECM Summary

B1B2factorcurvesGHz-days
5000050000002807.872
25000025000000385.342
2500005000000050.957


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2001-12-22T00:00:00ANONYMOUSv4_computers4B6092F1B90B025B0.022
2015-04-11T21:21:00MadPooManual testing4B6092F1B90B025B0.022


PRP results:
dateuseridcompidcofactorsres64PRP
2022-07-01T04:43:33some-students
4812854506045355668494802588067824940134513
95EF08D56B36C06Cno


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 = 935000, B2 = 26180000 (P-1 stage 2)
B1 = 935000 (P-1 stage 1)
B1 = 131072, B2 = 13107200 (P-1 stage 2)
B1 = 753807 (P-1 stage 1)
B1 = 65536, B2 = 6553600 (P-1 stage 2)
B1 = 376903 (P-1 stage 1)
B1 = 226142 (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 = 32768 (P-1 stage 1)
B1 = 16384 (P-1 stage 1)
103
104
105
106
107
108
103
104
105
106
107
108
109
1010
1011
1012
1013
TF factor-bounds graph:
268
267
266
265
264
263
262
261
260
258
257
256
250
260
270
280
290
2100
2110
2120
2130
2140
2150
Last modified: 2022-07-01T04:43:33+00:00