is 2 3652387 - 1
has 1099479 decimal digits
takes 0.384 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-
PRP58B2E9AB0B30D9B7verified PRP

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual27065.423168.5714%300000006000000009.298110.3752%74.721371.8322%3.2608%
PrimeNet2600.042163.3333%160003200000.00503.0767%0.047064.4615%1.1281%
GPU722640.974565.6250%220004000000.00652.0365%0.981066.3250%0.7000%
Difference+6+64.4486+2.9464%+29978000+599600000+9.2916+8.3388%+73.7402+5.5072%+5.5072%

Known prime factors (1 factor, 84.1 bits, 0.00230325% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
3652387210746771732276643533233432684.1242885055331380226733
97 × 1801109 × 16513624921
2021-09-021801109165136249211,098,924137.28255.91

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2009-07-07T09:57:00Carsten Kossendeyleela20000250000---0.005--0.713%
2012-01-30T02:45:00Squeeky_SquirrelP4_2600900001642500---0.027--1.877%
2016-06-13T00:04:28Jocelyn LaroucheManual testing10800032850006---0.043--2.305%
2016-12-29T20:13:46Jocelyn Larouchelow 4M129600129600---0.020--0.775%
2017-01-30T01:30:52Jocelyn Larouchelow 4M167520167520---0.026--0.897%
2017-03-06T22:36:53Squeeky_SquirrelP4_2600230000678500012---0.089--3.121%
2017-03-07T20:00:41Jocelyn Larouchelow 4M24122824122806---0.055--2.477%
2020-09-08T01:36:06axnManual testing3000000060000000012---9.298--10.375%
2022-03-04T04:19:05Jocelyn LaroucheManual testing9000090000---0.014--0.621%
2022-03-22T17:34:13Jocelyn LaroucheManual testing100000100000---0.015--0.663%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2016-02-23T16:29:35Mark RoseManual testing21260--0.042--
2009-03-10T05:59:00S485122USB-A260261--0.042--
2011-05-15T01:11:00markroldgamer261262--0.084--
2012-06-05T02:30:00GrunwalderGIMPManual testing21263--0.437--
2016-02-23T16:29:35Mark RoseManual testing262263--0.269--
2015-01-22T10:40:00VictordeHollanderManual testing263264--0.538--
2015-01-22T10:40:00VictordeHollanderManual testing264265--1.023--
2015-10-20T08:54:36ramgeisManual testing265266--2.046--
2016-12-28T15:57:36Gordon SpenceManual testing266267--4.092--
2019-02-11T13:34:43TJAOIManual testing267268--8.184--
2020-11-08T06:31:47axnManual testing268269--16.37--
2020-11-18T02:02:37axnManual testing269270--32.74--


ECM factoring results:

Old Calculation Method

Total ECM effort:3.568 GHz-days
Estimated T-Level:1.200
DigitsB1CurvesCompleteFacMiss
201100024 / 1000.24078.568%
255000024 / 2800.08691.772%

New Calculation Method

Total ECM effort:3.568 GHz-days
Estimated T-Level:1.200
DigitsB1CompleteFacMiss
20110000.77446.108%
25500000.07093.242%
302500000.00499.570%


ECM Summary

B1B2factorcurvesGHz-days
500005000000223.271
50000500000020.297


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1999-08-16T00:00:00ANONYMOUSv4_computersE9A93830C15CCC__0.384


PRP results:
dateuseridcompidcofactorsres64PRP
2021-09-08T07:11:28Oliver KruseIOS-2
21074677173227664353323343
58B2E9AB0B30D9B7no


P-1 factor-bounds graph:
B1 = 30000000, B2 = 600000000 (P-1 stage 2)
B1 = 30000000 (P-1 stage 1)
B1 = 230000, B2 = 6785000 (P-1 stage 2)
B1 = 241228, B2 = 2412280 (P-1 stage 2)
B1 = 108000, B2 = 3285000 (P-1 stage 2)
B1 = 241228 (P-1 stage 1)
B1 = 230000 (P-1 stage 1)
B1 = 90000, B2 = 1642500 (P-1 stage 2)
B1 = 167520 (P-1 stage 1)
B1 = 129600 (P-1 stage 1)
B1 = 108000 (P-1 stage 1)
B1 = 100000 (P-1 stage 1)
B1 = 90000 (P-1 stage 1)
B1 = 20000, B2 = 250000 (P-1 stage 2)
B1 = 20000 (P-1 stage 1)
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1010
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TF factor-bounds graph:
270
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Last modified: 2022-03-22T17:34:13+00:00