is 2 3629203 - 1
has 1092499 decimal digits
takes 0.381 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-
PRPB490C4995FC339FCverified PRP

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual26932.896168.1159%30000000100000000012.617011.8559%45.513171.8961%3.7801%
PrimeNet2600.042363.3333%160003200000.00503.0733%0.047364.4602%1.1269%
GPU722640.980765.6250%220004000000.00652.0341%0.987266.3242%0.6992%
Difference+5+31.9154+2.4909%+29978000+999600000+12.6105+9.8217%+44.5259+5.5718%+5.5718%

Known prime factors (1 factor, 74.7 bits, 0.00205843% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
3629203307838192386833409079512374.7054241126665921325
52 × 169645066636853
2021-10-31251696450666368531,534.51,407,5782,628,964

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2009-07-06T11:08:00Carsten Kossendeyleela20000245000---0.005--0.825%
2012-01-19T17:21:00Squeeky_SquirrelP4_2600900001620000---0.026--2.114%
2015-11-10T13:12:55Squeeky_SquirrelP4_260018000047700006---0.065--3.095%
2017-06-10T03:56:31Jocelyn Larouchelow 4M36000036000006---0.082--3.213%
2020-07-02T12:32:20axnManual testing3000000060000000012---9.298--11.088%
2020-08-13T12:50:55axnManual testing30000000100000000012---12.62--11.856%
2022-03-04T04:19:15Jocelyn LaroucheManual testing9000090000---0.014--0.717%
2022-03-22T11:10:11Jocelyn LaroucheManual testing100000100000---0.015--0.764%
2022-05-25T14:13:27Jocelyn LaroucheManual testing100000130364850---1.096--4.853%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2009-03-11T05:47:00S485122USB-A260261--0.042--
2011-05-23T10:15:00markrManual testing21262--0.169--
2012-06-05T02:29:00GrunwalderGIMPManual testing21263--0.440--
2016-02-23T16:29:35Mark RoseManual testing262263--0.270--
2015-01-22T10:40:00VictordeHollanderManual testing263264--0.541--
2015-01-22T10:40:00VictordeHollanderManual testing264265--1.030--
2015-10-18T15:17:07ramgeisManual testing265266--2.059--
2016-12-26T04:42:20Gordon SpenceManual testing266267--4.118--
2018-09-24T14:19:03TJAOIManual testing267268--8.236--
2020-10-23T01:57:13axnManual testing268269--16.47--


ECM factoring results:

Old Calculation Method

Total ECM effort:5.066 GHz-days
Estimated T-Level:1.650
DigitsB1CurvesCompleteFacMiss
201100033 / 1000.33071.773%
255000033 / 2800.11888.864%

New Calculation Method

Total ECM effort:5.066 GHz-days
Estimated T-Level:1.650
DigitsB1CompleteFacMiss
20110001.08033.957%
25500000.09890.669%
302500000.00699.398%


ECM Summary

B1B2factorcurvesGHz-days
500005000000223.266
50000500000040.594
50000675000071.206


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1999-08-31T00:00:00ANONYMOUSv4_computersE7685FBADD00F2__0.381


PRP results:
dateuseridcompidcofactorsres64PRP
2021-11-01T10:22:04MarkSdesktop-i7
30783819238683340907951
B490C4995FC339FCno


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 = 100000, B2 = 130364850 (P-1 stage 2)
B1 = 360000, B2 = 3600000 (P-1 stage 2)
B1 = 180000, B2 = 4770000 (P-1 stage 2)
B1 = 360000 (P-1 stage 1)
B1 = 180000 (P-1 stage 1)
B1 = 90000, B2 = 1620000 (P-1 stage 2)
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: 2022-05-25T14:13:27+00:00