is 2 101488381 - 1
has 30551047 decimal digits
takes 404.086 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-
PRP8BA6C637BFBA37C4verified PRP

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual276150.795564.4737%8450001753375010.12783.8049%160.923465.8254%1.3517%
PrimeNet2729.423162.5000%400000200000008.47445.2084%17.897564.4532%1.9532%
GPU72276150.795564.4737%6500002200000010.46823.8474%161.263765.8405%1.3668%
Difference---+195000-4466250-0.3404-0.0425%-0.3404-0.0151%-0.0151%

Known prime factors:
No known factors for M101488381

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2020-12-06T05:40:52Ben Deloi-00fa66b7a5f87ba0c8450001753375012---10.13--3.805%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2010-03-21T22:13:001997rj7Manual testing263264--0.019--
2010-08-14T07:13:00subgeniusgigacare264265--0.037--
2012-04-16T01:46:00sasaki3home3265266--0.074--
2013-08-26T19:44:00PascalBieriManual testing266267--0.147--
2013-08-28T15:20:00PascalBieriManual testing267268--0.295--
2013-08-29T19:17:00PascalBieriManual testing268269--0.589--
2013-09-02T12:44:00SMoffatManual testing269270--1.178--
2013-09-05T00:53:00SMoffatManual testing270271--2.356--
2014-12-04T11:54:00cicciopernacchiaISI2271272--4.712--
2020-03-23T16:21:01Dylan DelgadoGPU72_TF272273--9.425--
2020-03-31T05:40:07SRBaseManual testing273274--18.85--
2020-10-10T18:25:28TheJudgerManual testing274275--37.70--
2020-10-10T18:25:28TheJudgerManual testing275276--75.40--


ECM factoring results:
No ECM results for M101488381


Lucas-Lehmer results:
No L-L results for M101488381


PRP results:
dateuseridcompidcofactorsres64PRP
2020-12-07T10:31:20Ben Deloi-00fa66b7a5f87ba0c8BA6C637BFBA37C4no


P-1 factor-bounds graph:
B1 = 845000, B2 = 17533750 (P-1 stage 2)
B1 = 845000 (P-1 stage 1)
104
105
106
104
105
106
107
108
TF factor-bounds graph:
276
275
274
273
272
271
270
269
268
267
266
265
264
250
260
270
280
290
2100
Last modified: 2020-12-07T10:31:20+00:00