is 2 25061563 - 1
has 7544283 decimal digits
takes 21.476 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
-unknown- primality tests remaining
ResidueStatus
L-L-unknown--unknown-
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual2671.185662.6866%----1.185662.6866%0.0000%
PrimeNet2660.589362.1212%11000040000000.40004.9792%0.989364.0073%1.8860%
GPU722709.534564.2857%18000050000000.55003.6615%10.084565.5934%1.3077%
Difference-3-8.3489-1.5991%-180000-5000000-0.5500-3.6615%-8.8989-2.9068%-2.9068%

Known prime factors (2 factors, 124.2 bits, 0.00049572% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
2506156315440580755671084631960.42130805302837
3 × 53 × 359 × 539677
2003-11-283595396770.00900.03700.0682
25061563162258381529597027032063.815323719597077
3 × 28711 × 3758369
2017-05-172871137583690.13080.28820.4752

1 Composite Factors:
exponentprime factorscomposite factordigitsbits*
250615632505363643292232424397821262583527548938124.236
P-1 results:
No P-1 results for M25061563


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2003-11-28T00:00:00markrv4_computers??60.421190.00344.330.006
2001-08-12T00:00:00Net_Forcev4_computers21256--0.000--
2001-08-24T00:00:00Mattv4_computers21258--0.002--
2022-06-24T06:01:06LordJuliusManual testing2126360.421190.00944.330.019
2017-05-17T15:08:54TJAOIManual testing263264*63.815200.06744.200.138


ECM factoring results:
No ECM results for M25061563


Lucas-Lehmer results:
No L-L results for M25061563


PRP results:
No PRP results for M25061563


P-1 factor-bounds graph:
101
102
103
104
105
101
102
103
104
105
106
107
TF factor-bounds graph:
267
264
263
258
256
2
250
260
270
280
290
2100
Last modified: 2022-06-24T06:01:06+00:00