is 2 66173897 - 1
has 19920328 decimal digits
takes 167.273 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
Actual2680.900761.7647%----0.900761.7647%0.0000%
PrimeNet2703.610962.8571%280000130000003.56645.3108%7.177364.8297%1.9726%
GPU7227457.815364.8649%450000150000004.55493.9223%62.370366.2430%1.3781%
Difference-6-56.9146-3.1002%-450000-15000000-4.5549-3.9223%-61.4695-4.4783%-4.4783%

Known prime factors (5 factors, 265.1 bits, 0.00040056% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
661738972137416873111237.6371615
5 × 17 × 19
-17193.734e-106.271e-50.0001
661738972495135755068791547.8261885287
3 × 23 × 89 × 307
2008-09-29893073.034e-70.00040.0007
6617389710833868656869531649.9448185908
22 × 3 × 17 × 40127
2014-05-1617401272.087e-60.00810.0150
6617389753457149629536568011962.21340391417200
24 × 52 × 71 × 173 × 8221
2016-07-1217382210.02410.00220.0031
661738972009286611810005348012167.4451518186704200
23 × 52 × 19853 × 382357
2022-08-05198533823570.78150.14520.1481

26 Composite Factors:
exponentprime factorscomposite factordigitsbits*
66173897533314526358409195475123692685.463
661738972315649366825050633383533832787.582
661738972703197305147425249795120496873097.771
6617389711426021360653744609433505521113199.850
661738974294683106996728028355911561011132105.082
66173897133382845404719012244756018063407934110.039
66173897579147737857020831286722226541735334112.158
661738975013442867308168436587379365439607935115.271
6617389721768347246355991354565064924815135336117.390
66173897107410735056152013326679324455961083160140129.658
661738975777859531367588184984547120555544942165741135.408
6617389728509474435146904359035421012394399132847156945147.676
66173897123788014691908343746899867931597291383930778346149.795
661738971071581737695745802249179372256726271816245356947152.908
661738974652803270407890188298865439564250373772758178347155.027
66173897144505222819425932681050774718170736873945747128749159.984
661738975431498154313607209432300461308316166837068465728750165.216
6617389722958151746216709659354197061834749026790961951491
1
51167.295
6617389726800436551682560563114677486605669221061946228608
3279
54177.484
6617389711636737959361625536045812819346385041982086604658
01753
55179.603
6617389730886790150676119519637690584725553790821369505560
8714739257
60197.621
6617389711609375801295726579909540550243631680960147958856
823151585257
62202.853
6617389757283705292280289508130774755766803414081194461562
969446923572769
65215.122
6617389724872560062299167904981768830035703630415427627161
3565898641656183
66217.240
6617389729035240954769420054133435104213112512089518183826
7168240542101758887
69227.429
6617389762060413931538664753154013791150297932650995028881
387248147379947278768269382857
80265.066
P-1 results:
No P-1 results for M66173897


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2008-09-29T08:27:00markrManual testing??47.826152.00536e-8344.54.12953e-8
2014-05-16T11:25:00TJAOIManual testing??49.944169.53742e-7344.51.96399e-6
2016-07-12T14:17:42TJAOIManual testing262263*62.213190.015344.40.030
2022-08-10T19:29:27LordJuliusManual testing2126749.944162.08705e-6344.54.29774e-6
2022-08-10T19:29:27LordJuliusManual testing2126737.637123.73406e-10344.57.68935e-10
2022-08-10T19:29:27LordJuliusManual testing2126747.826153.03380e-7344.56.24734e-7
2022-08-10T19:29:27LordJuliusManual testing2126762.213190.024344.40.050
2022-08-05T09:33:00TJAOIManual testing267268*67.445210.332343.60.683
2022-08-10T19:29:27LordJuliusManual testing26726867.445210.332343.60.683


ECM factoring results:
No ECM results for M66173897


Lucas-Lehmer results:
No L-L results for M66173897


PRP results:
No PRP results for M66173897


P-1 factor-bounds graph:
100
101
102
103
104
105
100
101
102
103
104
105
106
TF factor-bounds graph:
268
267
263
2
230
240
250
260
270
280
290
2100
Last modified: 2022-08-10T19:29:27+00:00