is 2 52799741 - 1
has 15894306 decimal digits
takes 101.151 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
Actual2719.054663.3803%610000144875003.79475.2497%12.849365.3027%
Target27336.228364.3836%3600009600000015.47453.9097%51.702865.7761%
Difference-2-27.1737-1.0033%+250000-81512500-11.6798+1.3400%-38.8535-0.4734%

Known prime factors (2 factors, 140.3 bits, 0.00026580% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
527997414714515008300298169132168.6764464524748616
23 × 103 × 499 × 10857941		2015-01-22499108579411.33871.64463.0692
5279974137518263066276616494632271.66835528832486391
2879 × 10099 × 1221971		2012-01-1610099122197117.2320.21150.3454

1 Composite Factors:
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2011-06-12lindedD1NK1VG1-NET41761000014487500---3.795--5.250%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2012-01-16ChuckManual testing??71.668228.178223.218.04
1999-12-01ANONYMOUSv4_computers21253--2.27259e-5--
2000-01-04ANONYMOUSv4_computers21253--2.27259e-5--
2000-02-23ANONYMOUSv4_computers21254--4.54519e-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--
2008-06-02ANONYMOUSv4_computers21263--0.030--
2008-11-21DerekManual testing21264--0.067--
2009-04-17bayannebilbo264265--0.071--
2009-04-25Sturle Sundefungo.ifi265266--0.142--
2009-04-26Sturle Sundefungo.ifi266267--0.283--
2009-05-02Gymnasium_Raublingc4267268--0.566--
2010-03-28sannerud.comJimEmcLap268269--1.132--
2015-01-22Mark RoseManual testing268269*68.676210.210239.00.496
2012-01-16ChuckManual testing269270--2.264--
2012-01-16ChuckManual testing270271--4.529--


ECM factoring results:
No ECM results for M52799741


Lucas-Lehmer results:
No L-L results for M52799741


PRP results:
No PRP results for M52799741


P-1 factor-bounds graph:
B1 = 610000, B2 = 14487500 (P-1 stage 2)
B1 = 610000 (P-1 stage 1)
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108
TF factor-bounds graph:
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2
this exponent TF target: 73
TF double-checked to: 67.8
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Last modified: 2023-06-05T21:50:05+00:00