is 2 89218183 - 1
has 26857350 decimal digits
takes 300.781 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-daysProbabilityProb over default TF
Actual276171.534564.4737%7150007150003.49521.4626%175.029764.9933%0.5196%
PrimeNet2715.358561.9718%360000170000006.19165.4126%11.550164.0302%2.0583%
GPU7227585.766264.0000%600000200000008.09994.0528%93.866165.4590%1.4590%
Difference+1+85.7682+0.4737%+115000-19285000-4.6047-2.5902%+81.1635-0.4657%-0.4657%

Known prime factors (1 factor, 80.4 bits, 0.00009010% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
8921818315789447448187612693755212580.3858848783351812720
24 × 3 × 5 × 181 × 683 × 3637 × 82003
2018-10-273637820035,310.90.03870.0408

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2018-10-27T20:31:46Jwb52zClay7150007150002580.3853.495601.66.9901.463%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2010-11-08T11:50:00Architects Cubedm1_17264265--0.042--
2013-03-17T02:50:00ANONYMOUS265266--0.084--
2013-03-27T03:50:00ANONYMOUS266267--0.168--
2013-03-29T04:39:00Smok_bmvManual testing267268--0.335--
2013-07-24T23:21:00SMoffatManual testing268269--0.670--
2013-07-27T02:17:00SMoffatManual testing269270--1.340--
2013-09-22T01:26:00SMoffatManual testing270271--2.680--
2017-07-07T13:45:10monstManual testing271272--5.361--
2017-08-18T20:59:11Matthias WurtingerManual testing272273--10.72--
2017-08-23T08:37:06Brian BeuningManual testing273274--21.44--
2018-09-30T16:49:23TheJudgerManual testing274275--42.88--
2018-09-30T16:49:23TheJudgerManual testing275276--85.77--


ECM factoring results:
No ECM results for M89218183


Lucas-Lehmer results:
No L-L results for M89218183


PRP results:
No PRP results for M89218183


P-1 factor-bounds graph:
B1 = 715000 (P-1 stage 1)
102
103
104
105
106
102
103
104
105
106
TF factor-bounds graph:
276
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274
273
272
271
270
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2100
Last modified: 2018-10-27T20:31:46+00:00