is 2 3650447 - 1
has 1098895 decimal digits
takes 0.383 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-
PRPFCDB172D71921968verified PRP

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual26932.704768.1159%300000006000000009.298111.0926%42.002871.6527%3.5368%
PrimeNet2600.042163.3333%160003200000.00503.0764%0.047064.4614%1.1280%
GPU722640.975065.6250%220004000000.00652.0363%0.981566.3250%0.7000%
Difference+5+31.7297+2.4909%+29978000+599600000+9.2916+9.0563%+41.0213+5.3277%+5.3277%

Known prime factors (1 factor, 69.3 bits, 0.00189861% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
36504477306225743828794100732169.308100073028643188
22 × 3 × 23 × 362583437113
2020-11-152336258343711353.8883,008.45,618.9

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2009-07-07T04:46:00Carsten Kossendeyleela20000250000---0.005--0.831%
2012-01-29T08:26:00Squeeky_SquirrelP4_2600900001642500---0.027--2.123%
2016-06-13T00:04:28Jocelyn LaroucheManual testing10800032850006---0.043--2.594%
2016-12-29T20:13:45Jocelyn Larouchelow 4M129600129600---0.020--0.891%
2017-01-30T01:30:52Jocelyn Larouchelow 4M167520167520---0.026--1.027%
2017-03-02T20:51:39Jocelyn Larouchelow 4M24122824122806---0.055--2.768%
2020-09-05T10:36:58axnManual testing3000000060000000012---9.298--11.093%
2022-03-04T04:19:06Jocelyn LaroucheManual testing9000090000---0.014--0.718%
2022-03-22T11:07:42Jocelyn LaroucheManual testing100000100000---0.015--0.765%
2022-05-25T14:14:33Jocelyn LaroucheManual testing100000130364850---1.096--4.857%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2016-02-23T16:29:35Mark RoseManual testing21260--0.042--
2009-03-10T16:49:00S485122USB-Z260261--0.042--
2011-05-16T14:47:00markroldgamer261262--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--1.024--
2015-10-20T08:54:36ramgeisManual testing265266--2.047--
2016-12-28T15:57:35Gordon SpenceManual testing266267--4.094--
2019-02-13T05:38:53YxinityManual testing267268--8.188--
2020-11-08T02:44:54axnManual testing268269--16.38--


ECM factoring results:

Old Calculation Method

Total ECM effort:3.270 GHz-days
Estimated T-Level:1.100
DigitsB1CurvesCompleteFacMiss
201100022 / 1000.22080.163%
255000022 / 2800.07992.431%

New Calculation Method

Total ECM effort:3.270 GHz-days
Estimated T-Level:1.100
DigitsB1CompleteFacMiss
20110000.84642.906%
25500000.07892.469%
302500000.00599.507%


ECM Summary

B1B2factorcurvesGHz-days
500005000000192.824
50000500000030.446


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1999-08-07T00:00:00ANONYMOUSv4_computers661EE5287573EE__0.383


PRP results:
dateuseridcompidcofactorsres64PRP
2020-11-16T01:38:18Joe S.VMWare1
730622574382879410073
FCDB172D71921968no


P-1 factor-bounds graph:
B1 = 30000000, B2 = 600000000 (P-1 stage 2)
B1 = 30000000 (P-1 stage 1)
B1 = 100000, B2 = 130364850 (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 = 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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TF factor-bounds graph:
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Last modified: 2022-05-25T14:14:33+00:00