is 2 194671 - 1
has 58602 decimal digits
takes 0.001 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L441080BCE9808922double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual267152.636673.1343%10000000020000000001.360712.3067%153.997376.4406%3.3063%
PrimeNet2400.000055.0000%2000500000.000012.4354%0.000060.5959%5.5959%
GPU722440.000059.0909%3600800000.00018.8257%0.000162.7014%3.6105%
Difference+23+152.6366+14.0434%+99996400+1999920000+1.3607+3.4810%+153.9973+13.7392%+13.7392%

Known prime factors:
No known factors for M194671

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2001-05-06T00:00:00ANONYMOUSv4_computers10000010000000---0.004--2.611%
2002-06-02T00:00:00ANONYMOUSv4_computers327683276800---0.001--1.484%
2002-07-27T00:00:00ANONYMOUSv4_computers655366553600---0.003--2.144%
2003-02-16T00:00:00ANONYMOUSv4_computers13107213107200---0.006--2.933%
2003-10-08T00:00:00ANONYMOUSv4_computers26214426214400---0.011--3.839%
2006-02-01T00:00:00Jocelyn Larouchev4_computers10000001000000---0.007--1.921%
2009-02-03T06:14:00axnManual testing5000000200000000---0.104--7.693%
2013-10-19T13:26:00alpertronManual testing1000000002000000000---1.361--12.307%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1999-11-17T00:00:00ANONYMOUSv4_computers252253--0.003--
2000-04-27T00:00:00ANONYMOUSv4_computers21254--0.012--
2022-03-07T04:47:16LordJuliusManual testing254255--0.012--
2001-01-28T00:00:00ANONYMOUSv4_computers21256--0.049--
2002-04-28T00:00:00ANONYMOUSv4_computers21257--0.099--
2016-02-23T16:27:58Mark RoseManual testing257258--0.099--
2009-01-01T03:41:00Sturle Sundenardi.ifi258259--0.197--
2009-01-23T02:29:00Sturle Sundenouchcraft.ifi259260--0.394--
2013-08-12T01:11:00lycornasteroid260261--0.789--
2015-08-25T13:23:00NRManual testing261262--1.578--
2015-12-02T12:18:56Gordon SpenceManual testing262263--5.043--
2015-12-02T12:18:56Gordon SpenceManual testing263264--10.09--
2018-01-04T02:35:31BloodERazorManual testing264265--19.19--
2019-12-12T16:07:11Gordon SpenceManual testing265266--38.39--


ECM factoring results:

Old Calculation Method

Total ECM effort:35.573 GHz-days
Estimated T-Level:30.636
DigitsB1CurvesCompleteFacMiss
20110001063 / 10010.6300.002%
25500001063 / 2803.7962.230%
30250000788 / 6401.23129.165%
351000000201 / 15800.12788.051%

New Calculation Method

Total ECM effort:35.573 GHz-days
Estimated T-Level:30.636
DigitsB1CompleteFacMiss
201100086.5020.000%
255000013.6170.000%
302500001.70618.158%
3510000000.17583.930%
4030000000.01598.488%
45110000000.00199.884%


ECM Summary

B1B2factorcurvesGHz-days
5000050000002751.341
2500002500000058714.32
100000010000000018017.56
100000014160948270.777
100000014300000070.780
100000015300000070.802


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2016-06-01T06:38:19MadPooManual testing441080BCE98089220.001


PRP results:
No PRP results for M194671


P-1 factor-bounds graph:
B1 = 100000000, B2 = 2000000000 (P-1 stage 2)
B1 = 100000000 (P-1 stage 1)
B1 = 5000000, B2 = 200000000 (P-1 stage 2)
B1 = 5000000 (P-1 stage 1)
B1 = 262144, B2 = 26214400 (P-1 stage 2)
B1 = 1000000 (P-1 stage 1)
B1 = 131072, B2 = 13107200 (P-1 stage 2)
B1 = 100000, B2 = 10000000 (P-1 stage 2)
B1 = 65536, B2 = 6553600 (P-1 stage 2)
B1 = 262144 (P-1 stage 1)
B1 = 32768, B2 = 3276800 (P-1 stage 2)
B1 = 131072 (P-1 stage 1)
B1 = 100000 (P-1 stage 1)
B1 = 65536 (P-1 stage 1)
B1 = 32768 (P-1 stage 1)
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1010
TF factor-bounds graph:
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Last modified: 2022-05-11T07:11:47+00:00