is 2 58476653 - 1
has 17603227 decimal digits
takes 123.938 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-LB4CA0D1964EBAEC2double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual27465.425564.8649%550000112750003.48603.7477%68.911566.1816%1.3167%
PrimeNet2692.041662.3188%260000110000002.59735.5465%4.638964.4088%2.0900%
GPU7227332.711264.3836%400000130000003.33904.0815%36.050265.8373%1.4537%
Difference+1+32.7143+0.4813%+150000-1725000+0.1470-0.3338%+32.8613+0.3444%+0.3444%

Known prime factors:
No known factors for M58476653

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2012-11-05T11:54:00owftheevilManual testing55000011275000---3.486--3.748%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1999-12-23T00:00:00ANONYMOUSv4_computers21253--2.05197e-5--
2000-02-09T00:00:00ANONYMOUSv4_computers21254--4.10394e-5--
2000-06-28T00:00:00ANONYMOUSv4_computers21256--0.000--
2000-06-29T00:00:00ANONYMOUSv4_computers21256--0.000--
2001-07-17T00:00:00ANONYMOUSv4_computers21257--0.000--
2002-09-29T00:00:00ANONYMOUSv4_computers21258--0.001--
2003-07-30T00:00:00ANONYMOUSv4_computers21259--0.001--
2003-11-28T00:00:00ANONYMOUSv4_computers21261--0.005--
2016-02-23T17:05:39Mark RoseManual testing261263--0.022--
2008-11-04T08:25:00cameloidphi-phi263264--0.034--
2009-02-08T15:00:00arnaudSRV-330264265--0.064--
2009-02-09T01:33:00Sturle Sundedoak.ifi265266--0.128--
2009-02-13T07:09:00Gymnasium_Raublingd4266267--0.256--
2009-12-05T09:03:00Zonked_Zulubiology267268--0.511--
2011-11-23T09:02:00rduerrManual testing268270--3.067--
2012-04-10T09:02:00MikeBerlinManual testing270271--4.089--
2012-04-10T09:02:00MikeBerlinManual testing271272--8.179--
2012-10-01T23:52:00Kyle AskineManual testing272273--16.36--
2019-02-10T22:49:45TheJudgerManual testing273274--32.71--


ECM factoring results:
No ECM results for M58476653


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2013-02-01T22:46:00curtiscwcm200--23lB4CA0D1964EBAEC2123.9
2021-07-12T18:31:36jdannebettinaB4CA0D1964EBAEC2123.9


PRP results:
No PRP results for M58476653


P-1 factor-bounds graph:
B1 = 550000, B2 = 11275000 (P-1 stage 2)
B1 = 550000 (P-1 stage 1)
104
105
106
104
105
106
107
108
TF factor-bounds graph:
274
273
272
271
270
268
267
266
265
264
263
261
259
258
257
256
254
253
250
260
270
280
290
2100
Last modified: 2021-07-12T18:31:36+00:00