is 2 118152451 - 1
has 35567432 decimal digits
takes 545.635 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
Actual277259.056564.9351%510000153403748.82563.2022%267.882166.0579%
Target276129.527564.4737%80000014000000056.14084.2101%185.668365.9694%
Difference+1+129.5290+0.4614%-290000-124659626-47.3152-1.0079%+82.2138+0.0886%

Known prime factors (1 factor, 128.4 bits, 0.00010867% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
11815245144784894190996302974244753849421532659939128.3961895216468721258392440997853249
32 × 13 × 2347 × 3697 × 21559 × 23059 × 246271 × 15248533		2023-08-04246271152485331.328e+97.122310.390

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2023-08-04S00030r310-015100001534037439128.3968.8261,09117.653.202%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2010-05-13G-Manwcg1263264--0.017--
2010-10-13Charles A. Morrischandra264265--0.032--
2012-07-12tscprt265266--0.063--
2014-04-03snme2pm1Manual testing266268--0.379--
2014-06-26snme2pm1Manual testing268269--0.506--
2014-11-19snme2pm1Manual testing269270--1.012--
2015-01-21snme2pm1Manual testing270271--2.024--
2015-04-03SMoffatManual testing271272--4.048--
2016-03-20snme2pm1Manual testing272273--8.096--
2019-08-27Niels_Mache_NextcloudManual testing273274--16.19--
2021-03-20jwnutterManual testing274275--32.38--
2021-03-20jwnutterManual testing275276--64.76--
2021-11-21VoidfManual testing276277--129.5--


ECM factoring results:
No ECM results for M118152451


Lucas-Lehmer results:
No L-L results for M118152451


PRP results:
No PRP results for M118152451


P-1 factor-bounds graph:
B1 = 510000, B2 = 15340374 (P-1 stage 2)
B1 = 510000 (P-1 stage 1)
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105
106
104
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108
TF factor-bounds graph:
277
276
275
274
273
272
271
270
269
268
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