is 2 58020869 - 1
has 17466022 decimal digits
takes 122.972 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-
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual27216.482663.8889%685000181525005.02985.1039%21.512465.7320%
Target27332.968264.3836%40000010400000018.57574.0775%51.543965.8358%
Difference-1-16.4856-0.4947%+285000-85847500-13.5458+1.0264%-30.0315-0.1039%

Known prime factors (1 factor, 72.2 bits, 0.00012447% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
5802086955004109662416380123112272.22047400280804495
5 × 2143 × 36433 × 121421		2012-06-053643312142131.8800.12620.2279

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2008-09-27Alexander DManual testing5050---0.000--0.000%
2008-10-04Alexander DManual testing10010000---0.002--0.000%
2011-02-06James HeinrichQ660068500018152500---5.030--5.104%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2012-06-05BigBrotherManual testing??72.2202215.40249.331.21
1999-12-08ANONYMOUSv4_computers21253--2.06809e-5--
1999-12-23ANONYMOUSv4_computers21253--2.06809e-5--
2000-02-09ANONYMOUSv4_computers21254--4.13618e-5--
2000-06-11ANONYMOUSv4_computers21256--0.000--
2001-07-07ANONYMOUSv4_computers21257--0.000--
2002-04-28ANONYMOUSv4_computers21258--0.001--
2003-07-30ANONYMOUSv4_computers21259--0.001--
2003-08-25mdrgv4_computers21261--0.005--
2022-06-27LordJuliusManual testing261263--0.022--
2008-10-26Sturle Sundenouchcraft.ifi263264--0.034--
2008-10-26NoWhereManAcer-laptop264265--0.064--
2008-10-29NoWhereManAcer-laptop265266--0.129--
2008-11-01NoWhereManAcer-laptop266267--0.258--
2008-11-04NoWhereManAcer-laptop267268--0.515--
2008-11-08NoWhereManAcer-laptop268269--1.030--
2011-06-05TheJudgerManual testing269270--2.061--
2011-06-05TheJudgerManual testing270271--4.121--
2012-06-05BigBrotherManual testing271272--8.243--


ECM factoring results:
No ECM results for M58020869


Lucas-Lehmer results:
No L-L results for M58020869


PRP results:
No PRP results for M58020869


P-1 factor-bounds graph:
B1 = 685000, B2 = 18152500 (P-1 stage 2)
B1 = 685000 (P-1 stage 1)
B1 = 100, B2 = 10000 (P-1 stage 2)
B1 = 100 (P-1 stage 1)
B1 = 50 (P-1 stage 1)
100
101
102
103
104
105
106
100
101
102
103
104
105
106
107
108
TF factor-bounds graph:
272
271
270
269
268
267
266
265
264
263
261
259
258
257
256
254
253
2
this exponent TF target: 73
TF double-checked to: 67.8
250
260
270
280
Last modified: 2023-06-05T21:50:05+00:00