is 2 25065853 - 1
has 7545574 decimal digits
takes 21.480 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
Actual2671.185462.6866%----1.185462.6866%0.0000%
PrimeNet2660.589262.1212%11000040000000.40004.9793%0.989264.0073%1.8861%
GPU722709.532964.2857%18000055000000.58383.7339%10.116765.6193%1.3335%
Difference-3-8.3475-1.5991%-180000-5500000-0.5838-3.7339%-8.9313-2.9327%-2.9327%

Known prime factors (3 factors, 176.1 bits, 0.00070247% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
250658531610166805152256071857.1603211873151
3211873151
2001-08-24132118731510.0013217.44406.12
250658533854913460759739031858.4197689571667
563 × 769 × 17761
2015-09-03769177610.00220.00210.0022
2506585316324475726766948411960.50232563176140
22 × 5 × 11 × 148014437
2016-02-11111480144370.009310.02018.715

4 Composite Factors:
exponentprime factorscomposite factordigitsbits*
250658536207053691249935840294276228933412135115.579
2506585326285128926753890819897459420799348736117.662
2506585362929441218959533062747065021073442336118.921
2506585310132689731754876618323009420127801378268596100596
9761
54176.081
P-1 results:
No P-1 results for M25065853


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2001-08-24T00:00:00Mattv4_computers??57.160180.00044.350.001
2001-08-12T00:00:00Net_Forcev4_computers21256--0.000--
2015-09-03T11:18:00TJAOIManual testing258259*58.419180.00144.350.001
2022-06-24T06:01:07LordJuliusManual testing2126057.160180.00144.350.003
2022-06-24T06:01:07LordJuliusManual testing2126058.419180.00244.350.005
2016-02-11T12:51:23TJAOIManual testing260261*60.502190.00344.340.007


ECM factoring results:
No ECM results for M25065853


Lucas-Lehmer results:
No L-L results for M25065853


PRP results:
No PRP results for M25065853


P-1 factor-bounds graph:
100
101
102
103
100
101
102
103
104
105
106
107
108
109
1010
TF factor-bounds graph:
267
261
260
259
256
2
250
260
270
280
290
2100
Last modified: 2022-06-24T06:01:07+00:00