is 2 25104221 - 1
has 7557124 decimal digits
takes 21.513 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
Actual2671.183662.6866%----1.183662.6866%0.0000%
PrimeNet2660.588362.1212%11000040000000.40004.9803%0.988364.0077%1.8865%
GPU722709.518364.2857%18000055000000.58383.7347%10.102265.6195%1.3338%
Difference-3-8.3347-1.5991%-180000-5500000-0.5838-3.7347%-8.9185-2.9330%-2.9330%

Known prime factors (2 factors, 117.7 bits, 0.00046885% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
25104221769810021147624791756.0951533228259
179 × 239 × 35839
2001-08-24239358390.00060.00270.0045
2510422135109815904163711911961.60769928112695
5 × 7 × 47 × 42509491
2016-05-1347425094910.01382.87795.3750

1 Composite Factors:
exponentprime factorscomposite factordigitsbits*
2510422127027888123673480252665878206334248936117.702
P-1 results:
No P-1 results for M25104221


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2001-08-24T00:00:00Mattv4_computers??56.095170.00044.410.000
2001-08-12T00:00:00Net_Forcev4_computers21256--0.000--
2022-06-24T06:01:08LordJuliusManual testing2126156.095170.00144.410.001
2016-05-13T15:08:05TJAOIManual testing261262*61.607190.00244.390.003


ECM factoring results:
No ECM results for M25104221


Lucas-Lehmer results:
No L-L results for M25104221


PRP results:
No PRP results for M25104221


P-1 factor-bounds graph:
100
101
102
103
100
101
102
103
104
105
106
107
108
TF factor-bounds graph:
267
262
261
256
2
250
260
270
280
290
2100
Last modified: 2022-06-24T06:01:08+00:00