is 2 119905957 - 1
has 36095290 decimal digits
takes 553.732 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
-unknown- primality tests remaining
ResidueStatus
L-L-unknown--unknown-
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual277255.268164.9351%600000112500007.90313.0794%263.171266.0149%
Target276127.633364.4737%8000002800000015.28024.2174%142.913565.9720%
Difference+1+127.6348+0.4614%-200000-16750000-7.3771-1.1380%+120.2577+0.0429%

Known prime factors:
No known factors for M119905957

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2023-03-12Sergey NosovTS140-026000001125000012---7.903--3.079%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2010-05-16kiwiboybis263264--0.016--
2010-10-17Donna NobleE4600264265--0.031--
2012-08-04Richard8F02265266--0.062--
2014-12-18OS1corner3266267--0.125--
2015-04-14Mihai PredaManual testing267268--0.249--
2015-04-25Mihai PredaManual testing268269--0.499--
2015-05-04Mihai PredaManual testing269270--0.997--
2015-05-27Mihai PredaManual testing270271--1.994--
2015-06-04SRS TechnologyManual testing271272--3.989--
2020-05-04Greg HoganManual testing272273--7.977--
2021-03-23BommerManual testing273274--15.95--
2021-07-10TheJudgerManual testing274275--31.91--
2021-07-10TheJudgerManual testing275276--63.82--
2022-05-22TheJudgerManual testing276277--127.6--


ECM factoring results:
No ECM results for M119905957


Lucas-Lehmer results:
No L-L results for M119905957


PRP results:
No PRP results for M119905957


P-1 factor-bounds graph:
B1 = 600000, B2 = 11250000 (P-1 stage 2)
B1 = 600000 (P-1 stage 1)
104
105
106
104
105
106
107
108
TF factor-bounds graph:
277
276
275
274
273
272
271
270
269
268
267
266
265
264
this exponent TF target: 76
TF double-checked to: 67.8
250
260
270
280
Last modified: 2023-04-26T21:34:10+00:00