is 2 25203371 - 1
has 7586971 decimal digits
takes 21.598 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
Actual2671.179062.6866%----1.179062.6866%0.0000%
PrimeNet2660.586062.1212%11000040000000.40004.9829%0.986064.0087%1.8875%
GPU722709.480964.2857%18000055000000.58383.7367%10.064765.6202%1.3345%
Difference-3-8.3019-1.5991%-180000-5500000-0.5838-3.7367%-8.8858-2.9337%-2.9337%

Known prime factors (2 factors, 118.3 bits, 0.00046948% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
252033716108331482394696971859.08412118084288
26 × 79 × 97 × 24709
-97247090.00600.00180.0031
252033716810046977922072731859.24013510190716
22 × 11 × 307049789
2015-11-05113070497890.005220.78738.824

1 Composite Factors:
exponentprime factorscomposite factordigitsbits*
2520337141598024351828260707096184862650628136118.324
P-1 results:
No P-1 results for M25203371


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2001-08-12T00:00:00Net_Forcev4_computers21256--0.000--
2001-08-24T00:00:00Mattv4_computers21258--0.002--
2015-11-05T12:26:26TJAOIManual testing259260*59.240180.00244.580.004
2022-06-24T06:17:32LordJuliusManual testing2126059.084180.00644.580.012
2022-06-24T06:17:32LordJuliusManual testing2126059.240180.00544.580.011


ECM factoring results:
No ECM results for M25203371


Lucas-Lehmer results:
No L-L results for M25203371


PRP results:
No PRP results for M25203371


P-1 factor-bounds graph:
100
101
102
100
101
102
103
104
105
106
107
108
109
TF factor-bounds graph:
267
260
258
256
250
260
270
280
290
2100
Last modified: 2022-06-24T06:17:32+00:00