Results

number digits date factorization method
$6517^{41}-1$ 119 Apr 9, 2016 $1721143894499750902043821604452587332962773987635216551$
$17298603144647560469084686931547147631961645150480780987819464237$
gnfs
$6518^{41}-1$ 123 Apr 5, 2016 $9897326497526260404777009143721370040661104440752767917$
$12001073534425940531245369604279161744067205452282786161747992725977$
gnfs
$6522^{41}-1$ 134 Mar 19, 2016 $50298102921508619817576732031601114287$
$44981900060858972205579159169295969219654239$
$5075958996438826701102910757336168947167999545941937$
ecm
gnfs
gnfs
$6523^{41}-1$ 135 Mar 19, 2016 $2320213368303440224683592427123805058079$
$386816931888419625049590653912294457136946872490170766997012496967922219392267584647935120433179$
ecm
$6524^{41}-1$ 122 Mar 19, 2016 $28196465803083380287313291301568086251$
$3315035775878771990268365300576348970420028510257056394623109963832824505710002292757$
ecm
$6530^{41}-1$ 120 27.04.2016 $304615627293767603813887184471807054003$
$494485770303685595252032336483260955043466350030850864980399079313538641845171799$
snfs
$6531^{41}-1$ 126 28.04.2016 $1043874337469545393035464612644811635885858567601$
$580744535245805785618067833794594999357012890116036006016249793359130983445463$
snfs
$6535^{41}-1$ 125 28.04.2016 $11965689989690413914517743505266503955394490937767$
$7043483325150979813332120207278886909927499974250606318272247166215582231607$
snfs
$6543^{41}-1$ 118 29.04.2016 $140334181504250395422958468127190123133954575913$
$9023037360505693931234592288449925812745261382495427783502218371345649$
snfs
$6554^{41}-1$ 150 29.04.2016 $3404528636296463387118701988292700237168707538569831711$
$181811906570111708482033165960945188213275847795366598284185767476228336762427075113438226674019$
snfs
$6566^{41}-1$ 126 30.04.2016 $104379289097416688944078521297011016764806913217972870420343$
$1470342376112331715645151867393372219387584692998496557856488639231$
snfs
$6572^{41}-1$ 118 30.04.2016 $4545831904644852216069555493654953853961$
$268161842392305481255296454474783261006556987793136359815812229013986910509351$
snfs
$6575^{41}-1$ 137 30.04.2016 $14112974471919630322620987048319858259$
$1549938846680440810954306497804607058983133550243029035878751347410098911950959927451278332651670163$
snfs
$6576^{41}-1$ 146 02.05.2016 $254295888218990121527204448960992690374418064724442833$
$145326299872732201567711380859694872230917490538413698851197443907225132331862733030940980977$
snfs
$6583^{41}-1$ 129 02.05.2016 $21215095650397711789641409440769217088929443080630347044006927$
$39086572708012345108147152346015617319198174435788944105544945421651$
snfs
$6585^{41}-1$ 120 02.05.2016 $246463248709632486053526384426941113903435765233567729071$
$2091322009194118968957262732603681731509503417829809389108411437$
snfs
$6586^{41}-1$ 148 20.03.2016 5117246330961655833992828469769309155672767
569717541167598370223157551314457849388644155578505426801480140406638440667382299654473904600086700850123
ecm
$6587^{41}-1$ 144 02.05.2016 $4102132178885748007554979881697474886558816951$
$156707222820664462763874296206203464298073175994928946564949727844599600419904637083572162951684787$
snfs
$6594^{41}-1$ 125 02.05.2016 $561206360650556719592218652270922043$
$36243955727456577915179853711013561042357400256789492206000116426560483956426046753142319$
snfs
$6597^{41}-1$ 131 02.05.2016 $20187809095950230391910644912723032547260383912958214481710701471$
$4782630000798723075289746172813208625922724877193155455751302608931$
snfs
$6604^{41}-1$ 131 02.05.2016 $77750419508088602604912631808264527874353$
$440855870788105519689289719986699888596708524927971259984801549336253768663579$
snfs
$6606^{41}-1$ 147 03.05.2016 $119834924821165313653761309946656501132474571753$
$2981899041654828756999193748187068228170648061385680867081765946441924371661478313191049829277605437$
snfs
$6612^{41}-1$ 134 04.05.2016 $2643012461870906661193941417552292130632775061865783355701$
$27360378049735555516926179142329275684625833411099372862429366269901023493947$
snfs
$6613^{41}-1$ 120 30.9.2017 $8580473198870476214267752727907614816114778727127863$
$115079947227599678793376904702824028117289699662707801370325517895287$
snfs
$7467^{41}-1$ 155 Feb 25, 2017 $1377540386623833291871555744648368719927$
P116
ecm
$8523^{41}-1$ 158 Mar 12, 2017 $101909333149468501163984511326560531$
P123
ecm
$8757^{41}-1$ 158 Mar 12, 2017 $412714277368112908533949685192576868233$P120 ecm
$9996^{41}-1$ 118 08.09.2017 $9986110226488709117929480583560145147995267$
$784525273405964398967025407430780560678078360321019624882529655844648179993$
snfs
$51241^{41}-1$ 114 11.02.2016 $159872147974486354698698647925075418787$
$5818935018882791677013102717678865997484341003451859977736529597611826558039$
gnfs
$51577^{41}-1$ 189 24.03.2016 $741481418281179787819895241614217650651711$
P147
ecm
$54917^{41}-1$ 190 24.03.2016 $5251568403444821885149638770695164482987$
P150
ecm
$57179^{41}-1$ 113 08.02.2016 $4567163537377860208790095730389418320949411700651484703$
$5233686672665594145002079634978427540621234369075847562751$
gnfs
$62351^{41}-1$ 192 Mar 23, 2016
Nov 9, 2016
$8715748407088342133236370663845564561$
$348862072484731922980338278113348860403073677373066529468733523$
P93
ecm
snfs
$62753^{41}-1$ 192 24.03.2016 $2537316399261403678351784024612336597155138951$
P147
ecm
$63647^{41}-1$ 112 08.02.2016 $67315063677493330263057033017947$
$842454656676132931645832291310354157549$
$148366129080635371145178817858362107294261$
gnfs
$65993^{41}-1$ 193 30.03.2016 $32160842514239782058509901254496663$
P159
ecm
$68437^{41}-1$ 194 01.04.2016 $1207325451294310960668456501025863730406801$
P152
ecm
$69491^{41}-1$ 194 02.04.2016 $7365787101032991794415429668656861717142393$
c151
ecm
$71317^{41}-1$ 195 01.04.2016 $12670195044593727813094625957849633099$
P158
ecm
$75161^{41}-1$ 196 01.04.2016 $44961998431647086175789694770900120263$ ecm
158 03.04.2016 $775383919072292209221277249793385290672303$
116 18.04.2016 $180404594164570201581290360862488202811771240651755898087$
$174219906168776641620350636875875452168138013167578176822487$
gnfs
$76777^{41}-1$ 196 02.04.2016 $950195485221840163089015949025333194214251289$
$32256549710009458791795172433403590133034723084763$
$83718284114914520120397310619738963742322945580307536481902395853939143769589608101781982673912627043$
snfs
$77347^{41}-1$ 196 06.04.2016 $130843103768316210532034762149166077217$
c158
ecm
$78929^{41}-1$ 196 02.04.2016 $2679802863749905028688495443517777552971$
c157
ecm
$83437^{41}-1$ 197 10.04.2016 $216256339877806341473341930679251179474313903709$
P150
ecm
$83933^{41}-1$ 197 10.04.2016 $1940726716142104288694308962412383523418437$
P155
ecm
$84713^{41}-1$ 198 10.04.2016 $566565876293056327832553341885160235817$
P159
ecm
$87691^{41}-1$ 198 02.04.2016 $438475008735484199297739715644649361607234854266166604175001$
P139
snfs
$95107^{41}-1$ 200 02.04.2016 $4919641801214344697771610225581307415746614383$
P154
snfs
$100483^{41}-1$ 201 24.03.2016 $3975721924207117259828008744483841859068327$
c158
ecm
$101611^{41}-1$ 201 Nov 3, 2016 $44051106697293435547218292071664707628336140572587$
<$402804396136807229046365433898991969790654807044553110304804185033$
P86
snfs
$101749^{41}-1$ 201 Nov 6, 2016 $9759367776661511324815746736836227202881850335723825802920724797$
P137
snfs
$101737^{41}-1$ 201 02.04.2016 $88714941609840013385246217295567991$ ecm
166 09.04.2016 $6043012814701798517494358969973934195643$
P126
$125731^{41}-1$ 174 22.03.2016 $1384343938297106243746364075528548032894477831058469801$ ecm
119 23.03.2016 $39388462572401180266008709563237400684301985286783$
$2533619914213848523184196475016189601063223067087603030815777738256933$
gnfs
$500431^{41}-1$ 228 18.04.2016 $58273278586510074322301101698049886531377$
c188
ecm
$548557^{41}-1$ 141 08.02.2016 $1745524130318034504438411646749945550532135602234321249$
$220996820315132187330095270347115199559623459554938405818361242285250108728515722731347$
gnfs
$567661^{41}-1$ 191 1.10.2017 $3476277099574273472586508884176537529459408288497659437163063$
P130
snfs
$830833^{41}-1$ 207 23.05.2016 $64283334660394589336839954079037564091361809699625399327424603023493387520549$
P130
snfs
$1674289^{41}-1$ 147 04.02.2016 $1204275408401213179432176330469326052911124255237$ ecm
99 04.02.2016 $180860918449898261793202315724732178045048373$
$3796134024056667236782779681480388099432090627371635183$
qs
$5881423^{41}-1$ 271 21.02.2016 $20397900776018537061456105707538586591$
c234
ecm
$20381027^{41}-1$ 261 18.09.2016 $3108905995215779465792677459463877728878835327275723717$
P207
ecm
$25882657^{41}-1$ 297 07.02.2016 $1999985613489019382720680367450215718767$
P258
ecm
$53253289^{41}-1$ 310 10.02.2016 $96077834490835756075462979545454994917$
c272
ecm
$76623763^{41}-1$ 316 21.02.2016 $4509020661790324669652862276362011635211412537167$
P267
ecm
$5691933643219^{41}-1$ 511 09.02.2016 $53727363346386445317210315181613$
P479
ecm

Related Link

Numbers of the form $10^n+1$
Near repdigit related numbers
Generalized Fermat numbers
Other numbers
Aliquot sequences