is 2 52762363 - 1
has 15883054 decimal digits
takes 101.079 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
Actual27218.125363.8889%50000087500002.63754.2271%20.762865.4153%
Target27336.254064.3836%3600009600000015.47453.9094%51.728565.7759%
Difference-1-18.1287-0.4947%+140000-87250000-12.8370+0.3177%-30.9657-0.3606%

Known prime factors (1 factor, 69.0 bits, 0.00013070% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
527623635752343076941788093432168.9635451180301517
43 × 126771634919		2015-01-22431267716349191.325119,18635,834

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2012-04-07GrunwalderGIMPcompute-0-25000008750000---2.637--4.227%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1999-12-01ANONYMOUSv4_computers21253--2.27420e-5--
2000-01-04ANONYMOUSv4_computers21253--2.27420e-5--
2000-02-23ANONYMOUSv4_computers21254--4.54841e-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--
2008-05-10ANONYMOUSv4_computers21263--0.030--
2008-11-26DerekManual testing21264--0.067--
2009-02-12PrimeCruncherApollo7264265--0.071--
2009-02-16PrimeCruncherApollo7265266--0.142--
2009-02-17PrimeCruncherApollo7266267--0.283--
2009-04-25Son Johansonjohandesktop267268--0.567--
2010-03-28sannerud.comJimEmcLap268269--1.133--
2015-01-22Mark RoseManual testing268269*68.963210.195238.90.462
2011-12-10Kyle AskineManual testing269270--2.266--
2012-02-11Craig MeyersManual testing270272--13.60--


ECM factoring results:
No ECM results for M52762363


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2013-11-26simmayorT34004C4470038B9E16__101.1


PRP results:
No PRP results for M52762363


P-1 factor-bounds graph:
B1 = 500000, B2 = 8750000 (P-1 stage 2)
B1 = 500000 (P-1 stage 1)
100
101
102
103
104
105
106
100
101
102
103
104
105
106
107
108
109
1010
1011
1012
TF factor-bounds graph:
272
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