is 2 52752289 - 1
has 15880022 decimal digits
takes 101.060 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
factored, 0 LL tests remaining
ResidueStatus
L-L842D4CD4FB884003double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual2704.529762.8571%58000091350002.90595.2510%7.435664.8075%
Target27336.260964.3836%3600009600000015.47453.9093%51.735465.7759%
Difference-3-31.7312-1.5264%+220000-86865000-12.5686+1.3417%-44.2998-0.9684%

Known prime factors (1 factor, 68.4 bits, 0.00012964% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
527522893863131315128871406632168.3883661576955579
4273 × 856910123		2015-01-2242738569101231.7919129.70242.22

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2011-04-07trimixdmmi55800009135000---2.906--5.251%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1999-12-01ANONYMOUSv4_computers21253--2.27464e-5--
2000-01-04ANONYMOUSv4_computers21253--2.27464e-5--
2000-02-23ANONYMOUSv4_computers21254--4.54927e-5--
2000-05-10ANONYMOUSv4_computers21256--0.000--
2001-07-07ANONYMOUSv4_computers21257--0.000--
2002-05-25ANONYMOUSv4_computers21258--0.001--
2003-12-131997rj7v4_computers21259--0.001--
2004-03-261997rj7v4_computers21260--0.003--
2008-04-24ANONYMOUSv4_computers21263--0.030--
2008-11-13DerekManual testing21264--0.067--
2008-12-13KYOJI_KAMEI2264265--0.071--
2008-12-14KYOJI_KAMEI2265266--0.142--
2009-02-20benthomasFRXSQL266267--0.283--
2009-07-21ANONYMOUS267268--0.567--
2010-03-28sannerud.comJimEmcLap268269--1.133--
2015-01-22Mark RoseManual testing268269*68.388210.662238.91.565
2014-10-22NesowaManual testing269270--2.267--


ECM factoring results:
No ECM results for M52752289


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2011-05-10trimixdmmi5842D4CD4FB884003101.1


PRP results:
No PRP results for M52752289


P-1 factor-bounds graph:
B1 = 580000, B2 = 9135000 (P-1 stage 2)
B1 = 580000 (P-1 stage 1)
102
103
104
105
106
102
103
104
105
106
107
108
109
TF factor-bounds graph:
270
269
268
267
266
265
264
263
260
259
258
257
256
254
253
this exponent TF target: 73
TF double-checked to: 67.8
250
260
270
280
Last modified: 2023-06-05T21:50:05+00:00