is 2 88801681 - 1
has 26731970 decimal digits
takes 299.377 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
1 primality tests remaining
ResidueStatus
L-L1EB63FB5C65CCF__
needs double-check
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual276172.339064.4737%720000142200007.11513.5192%179.454165.7239%1.2502%
PrimeNet2715.383761.9718%360000170000006.19165.4096%11.575364.0290%2.0572%
GPU7227586.168564.0000%600000200000008.09994.0505%94.268465.4582%1.4582%
Difference+1+86.1705+0.4737%+120000-5780000-0.9848-0.5313%+85.1857+0.2658%+0.2658%

Known prime factors:
No known factors for M88801681

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2018-09-29T03:16:02S485122i7-7820HQ7200001422000012---7.115--3.519%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2010-11-15T18:20:00Architects Cubedm1_15264265--0.042--
2011-03-24T23:54:00wavelet3000Manual testing265266--0.084--
2011-03-31T11:32:00wavelet3000Manual testing266267--0.168--
2011-05-19T02:54:00wavelet3000Manual testing267268--0.337--
2011-05-19T02:54:00wavelet3000Manual testing268269--0.673--
2011-05-19T02:54:00wavelet3000Manual testing269270--1.346--
2013-11-25T02:58:00SMoffatManual testing270271--2.693--
2014-01-26T11:37:00Juergen KampmeierManual testing271272--5.386--
2017-08-12T10:58:22ANONYMOUSManual testing272273--10.77--
2017-08-12T10:58:22ANONYMOUSManual testing273274--21.54--
2018-09-02T21:44:07TheJudgerManual testing274275--43.09--
2018-09-02T21:44:07TheJudgerManual testing275276--86.17--


ECM factoring results:
No ECM results for M88801681


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2019-02-10T09:21:20ATX_Kush1EB63FB5C65CCF__299.4


PRP results:
No PRP results for M88801681


P-1 factor-bounds graph:
B1 = 720000, B2 = 14220000 (P-1 stage 2)
B1 = 720000 (P-1 stage 1)
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TF factor-bounds graph:
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Last modified: 2019-02-10T09:21:20+00:00