is 2 58150441 - 1
has 17505028 decimal digits
takes 123.247 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
factored, 0 LL tests remaining
ResidueStatus
L-L8511839ACDEE3560double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual27465.792564.8649%1000000200000006.25454.4943%72.047066.4440%
Target27332.894864.3836%40000010400000018.57574.0786%51.470465.8362%
Difference+1+32.8978+0.4813%+600000-84000000-12.3212+0.4157%+20.5766+0.6077%

Known prime factors (1 factor, 66.6 bits, 0.00011448% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
581504411097643567809702981512166.573943796426075
52 × 1669 × 22619447		2019-06-111669226194470.43623.79227.0736

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2012-05-15giorgioServer_Mac720000720000---2.213--1.733%
2018-08-20Sid & AndyPterodactyl1000000200000006---6.254--4.494%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1999-12-08ANONYMOUSv4_computers21253--2.06348e-5--
1999-12-23ANONYMOUSv4_computers21253--2.06348e-5--
2000-02-09ANONYMOUSv4_computers21254--4.12696e-5--
2000-06-26ANONYMOUSv4_computers21256--0.000--
2000-06-28ANONYMOUSv4_computers21256--0.000--
2000-06-29ANONYMOUSv4_computers21256--0.000--
2001-07-17ANONYMOUSv4_computers21257--0.000--
2002-06-09ANONYMOUSv4_computers21258--0.001--
2003-07-30ANONYMOUSv4_computers21259--0.001--
2003-11-28ANONYMOUSv4_computers21261--0.005--
2016-02-23Mark RoseManual testing261263--0.022--
2008-10-27KYOJI_KAMEIC99B0D67F263264--0.034--
2008-10-27KYOJI_KAMEIwlaptop264265--0.064--
2008-10-27KYOJI_KAMEIwlaptop265266--0.129--
2008-10-27KYOJI_KAMEIwlaptop266267--0.257--
2019-06-11TJAOIManual testing266267*66.573210.182282.20.417
2009-05-30DRHDRH6267268--0.514--
2011-04-28Charles A. Morrischandra268269--1.028--
2011-07-02nuggetprimec2quad269270--2.056--
2012-01-27Kyle AskineManual testing270271--4.112--
2012-04-15Craig MeyersManual testing271272--8.224--
2015-04-18monstManual testing272273--16.45--
2018-08-02Mark RoseManual testing273274--32.90--


ECM factoring results:
No ECM results for M58150441


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2012-07-17giorgioServer_Mac8511839ACDEE3560123.2


PRP results:
No PRP results for M58150441


P-1 factor-bounds graph:
B1 = 1000000, B2 = 20000000 (P-1 stage 2)
B1 = 1000000 (P-1 stage 1)
B1 = 720000 (P-1 stage 1)
102
103
104
105
106
102
103
104
105
106
107
108
TF factor-bounds graph:
274
273
272
271
270
269
268
267
266
265
264
263
261
259
258
257
256
254
253
this exponent TF target: 73
TF double-checked to: 67.8
250
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270
280
Last modified: 2023-06-05T21:50:05+00:00