is 2 3639409 - 1
has 1095572 decimal digits
takes 0.382 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
1 primality tests remaining
ResidueStatus
L-L-unknown--unknown-
PRP1D3CBED0AE2C81__verified PRP

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual26932.803968.1159%30000000100000000012.617011.8584%45.420971.8969%3.7809%
PrimeNet2600.042263.3333%160003200000.00503.0748%0.047264.4608%1.1274%
GPU722640.978065.6250%220004000000.00652.0352%0.984566.3246%0.6996%
Difference+5+31.8259+2.4909%+29978000+999600000+12.6105+9.8233%+44.4364+5.5723%+5.5723%

Known prime factors (1 factor, 70.1 bits, 0.00192660% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
363940912801581139379104364972270.117175874450211272
23 × 8929 × 2462124121
2021-08-208929246212412184.88420.43038.155

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2009-07-06T11:20:00Carsten Kossendeyleela20000245000---0.005--0.825%
2012-01-24T10:46:00Squeeky_SquirrelP4_2600900001620000---0.026--2.114%
2016-06-08T14:59:30Jocelyn LaroucheManual testing10800032400006---0.042--2.585%
2016-12-28T01:46:02Jocelyn Larouchelow 4M129600129600---0.020--0.890%
2017-01-30T01:30:50Jocelyn Larouchelow 4M167520167520---0.026--1.026%
2017-02-04T18:43:01Jocelyn Larouchelow 4M201024201024---0.031--1.131%
2017-03-02T20:51:37Jocelyn Larouchelow 4M24122824122806---0.055--2.767%
2020-07-25T02:09:14axnManual testing3000000060000000012---9.298--11.090%
2020-08-19T08:25:57axnManual testing30000000100000000012---12.62--11.858%
2022-03-04T04:19:11Jocelyn LaroucheManual testing9000090000---0.014--0.717%
2022-03-22T11:09:26Jocelyn LaroucheManual testing100000100000---0.015--0.765%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2001-07-07T00:00:00ANONYMOUSv4_computers21260--0.042--
2009-03-10T16:49:00S485122USB-A260261--0.042--
2011-05-17T05:33:00markroldgamer261262--0.084--
2012-06-20T01:22:00GrunwalderGIMPManual testing21263--0.439--
2016-02-23T16:29:35Mark RoseManual testing262263--0.270--
2015-01-22T10:40:00VictordeHollanderManual testing263264--0.539--
2015-01-22T10:40:00VictordeHollanderManual testing264265--1.027--
2015-10-18T15:17:11ramgeisManual testing265266--2.053--
2016-12-26T04:42:24Gordon SpenceManual testing266267--4.107--
2018-08-06T14:04:58TJAOIManual testing267268--8.213--
2020-11-06T07:02:35axnManual testing268269--16.43--


ECM factoring results:

Old Calculation Method

Total ECM effort:4.011 GHz-days
Estimated T-Level:1.350
DigitsB1CurvesCompleteFacMiss
201100027 / 1000.27076.234%
255000027 / 2800.09690.792%

New Calculation Method

Total ECM effort:4.011 GHz-days
Estimated T-Level:1.350
DigitsB1CompleteFacMiss
20110000.87141.855%
25500000.07992.430%
302500000.00599.516%


ECM Summary

B1B2factorcurvesGHz-days
500005000000223.268
50000500000050.743


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1999-10-07T00:00:00ANONYMOUSv4_computers550B85BE7FEF68__0.382


PRP results:
dateuseridcompidcofactorsres64PRP
2021-08-22T19:04:11GURA LOVE
1280158113937910436497
1D3CBED0AE2C81__no


P-1 factor-bounds graph:
B1 = 30000000, B2 = 1000000000 (P-1 stage 2)
B1 = 30000000, B2 = 600000000 (P-1 stage 2)
B1 = 30000000 (P-1 stage 1)
B1 = 241228, B2 = 2412280 (P-1 stage 2)
B1 = 108000, B2 = 3240000 (P-1 stage 2)
B1 = 241228 (P-1 stage 1)
B1 = 201024 (P-1 stage 1)
B1 = 90000, B2 = 1620000 (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 = 245000 (P-1 stage 2)
B1 = 20000 (P-1 stage 1)
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TF factor-bounds graph:
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Last modified: 2022-03-22T11:09:26+00:00