is 2 119128721 - 1
has 35861319 decimal digits
takes 550.143 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-
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual277256.933564.9351%6490005267067023.32474.1664%280.258266.3960%
Target276128.466064.4737%80000014000000056.14084.2142%184.606865.9708%
Difference+1+128.4675+0.4614%-151000-87329330-32.8161-0.0477%+95.6514+0.4252%

Known prime factors (1 factor, 126.4 bits, 0.00010612% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
11912872111396500888559210469431641047145765607939126.422478327173870993312747462513559
11 × 73 × 293 × 347 × 1579 × 9029 × 10429 × 38273 × 1029569		2023-09-043827310295691.115e+90.61790.7015

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2023-09-03Extremofiredhtrayner_team8426490005267067039126.42223.321,10046.654.166%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2010-05-18RichardUNKNOWN263264--0.016--
2010-10-17RichardFX5000_1264265--0.031--
2012-07-21subgeniusgigacare265266--0.063--
2014-12-13vwflat4j-laptop266267--0.125--
2015-04-13Judge HaleManual testing267268--0.251--
2015-04-13Judge HaleManual testing268269--0.502--
2015-04-13Judge HaleManual testing269270--1.004--
2015-04-25Mihai PredaManual testing270271--2.007--
2015-05-04Mihai PredaManual testing271272--4.015--
2020-11-12SRBaseManual testing272273--8.029--
2021-03-11Richard ThomasManual testing273274--16.06--
2021-05-25hktManual testing274275--32.12--
2021-07-07TheJudgerManual testing275276--64.23--
2022-01-27La GüiraManual testing276277--128.5--


ECM factoring results:
No ECM results for M119128721


Lucas-Lehmer results:
No L-L results for M119128721


PRP results:
No PRP results for M119128721


P-1 factor-bounds graph:
B1 = 649000, B2 = 52670670 (P-1 stage 2)
B1 = 649000 (P-1 stage 1)
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105
106
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108
TF factor-bounds graph:
277
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275
274
273
272
271
270
269
268
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266
265
264
this exponent TF target: 76
TF double-checked to: 67.9
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Last modified: 2023-09-25T11:53:03+00:00