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Enter a value, an expression, or a term with a variable like 10^n+1 to list a range. Switch to Database id to look a number up by its stored id. Reading never stores anything; use Create to add a number to the database. See the expression syntax & functions reference.

P · Proven prime
id #1100000008787409387 3,080 digits created 2026-05-03

Value

13427310278444719775748996288455875584286133307966640994377721013346279119468499333019091180217662204120329371167526954227244916263800794880795590223980980289894085266947878757754516856965226922803809796874237108687184936908073886764119354734802069268744539285953253681410663548313710758674031654039541391781204313498055351601457480171851055818084835018670756135714017894850449662458536613654109937495645445883575398187772885008381195813212697704432537826451657157838192002612068459079763312639264691359919445744683207727310537734253071344094108297292039717204469371632484513794306594061047734767900038023471263812066586650606285961603468436411293294303503407040294253082507676141057914185958973987028734103248793508060909632046716563893778412439400221987904717660067365404704181686953176999199977225092635151915578250159814408773986667333376193983794821387725090416671165165535981573740412265468729653750757410193238132179370236676031923141128583860213366796521549040417868456343778649651978564929799822732992396919792087422374387976375251585162015865552883085498698036192351340100531179144738216288935014422014825373525980538027347544515385940957393834788580952193889011225393622660963458757539698249603676466748336297268303045648023645634793902058408152651528245958222900729523399405905821728091390739598999593170873329814625807622801971259497910548120001526140377064496485697834998309856117473456570968524679005211151845995633456325356821182827404234089155631696780993606556898422356012210664513617375005838645197915604973648961604979759636024866039484270186140626544970628812011846353436277780558809443919112269333000974620449637125998321109835971025408794156234421310558233837295622335066041064743666974352290163963977958669391123566384583541852696753183415016528779557497963066205611250743347766128950228027009426915024073332997373904128394725790493686678908084454307578103082910546132565963152783414957598820073764232506482368091028129050538372837156789611902524070298325440800575706321219260680080265535748936779040548400844024117730392020788792211405031571969150882495352982301657105691256597991845746953332224998240544196608341856655340775349275023485614182595139190987567744452346430275107433467668544557076532451273228178738148973735246422838598387587770279886487437056300800367558914655951327440641813669778656988717235941946812499001588743255776243079645656181555636032256901024150489532865586975034935313965531742565457381093634182656233317099850739233815004907903463556983759614577389609998629479410324080928898637149558502255010651480044289350165215475358706955163163544050058321679152430504976347707369498170878867020003868307524012624628721457939455863939651500466070559737775835379581714814777996079946770967249285552066801103280277349313136380577723679903768962451979007504357019136525140083935883773955527076231049124721988071119280959059034821087392263078867501204331793048536667074615494420188503755259123772998663918993416322084467896331901594659877867578591521595951904923100821171268976742929941748571316994257247654632409084019421714610644537070693739
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 13 of the certificate chain of a 3,261-digit prime (192 intermediate primes).

Certified number3,261-digit prime
Certificatedownload
Certificate chainshow step 13 of 192

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000008787409387 --detail 2 --decimal
curl
curl -s 'https://factordb.com:4059/rpc' -H 'Content-Type: application/json' -d '{"jsonrpc":"2.0","id":1,"method":"get_number","params":{"target":{"id":1100000008787409387},"decimal":true,"detail":2}}'