is 2 115971809 - 1
has 34910994 decimal digits
takes 535.564 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
Actual277263.927664.9351%512000138340008.28873.1305%272.216366.0328%
Target276131.963164.4737%7000002600000013.91744.0737%145.880565.9209%
Difference+1+131.9646+0.4614%-188000-12166000-5.6288-0.9432%+126.3358+0.1118%

Known prime factors (1 factor, 86.5 bits, 0.00007456% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
1159718091071108887276785505225526972786.469461797093842342972
22 × 3 × 72 × 613 × 71941 × 17808893		2022-07-277194117808893142,5036.952612.135

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2022-07-27Sturle Sundeginger51200013834000122786.4698.2891,07116.583.130%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2010-05-09Donna NobleHTPC-V64263264--0.017--
2010-10-07WPSs1264265--0.032--
2012-06-28Richardworkmy265266--0.064--
2014-12-01subgeniusck-pasqual266267--0.129--
2015-03-17bunddogManual testing267268--0.258--
2015-03-22SMoffatManual testing268269--0.515--
2015-04-05SMoffatManual testing269270--1.031--
2015-05-10SMoffatManual testing270271--2.062--
2015-06-11SMoffatManual testing271272--4.124--
2020-04-26SRBaseManual testing272273--8.248--
2020-08-08tscManual testing273274--16.50--
2020-11-30hktManual testing274275--32.99--
2021-01-01KrieselManual testing275276--65.98--
2021-09-16KiriManual testing276277--132.0--


ECM factoring results:
No ECM results for M115971809


Lucas-Lehmer results:
No L-L results for M115971809


PRP results:
No PRP results for M115971809


P-1 factor-bounds graph:
B1 = 512000, B2 = 13834000 (P-1 stage 2)
B1 = 512000 (P-1 stage 1)
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108
TF factor-bounds graph:
277
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274
273
272
271
270
269
268
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266
265
264
this exponent TF target: 76
TF double-checked to: 67.8
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Last modified: 2023-04-26T21:34:10+00:00