factordbrpc · fdb
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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 #1100000008787409422 2,603 digits created 2026-05-03

Value

42473287447087268282961383262428328539876258437841469511049047199651278850507075312684687962324900798888774744733949748158960489667779548892269995109279393198233245414674632981562812650611910417950897735846869310617733755224365493531427294298257718634615013977007564710050906159603305946101531429383186737351456414373920582373704031290268566840157748684536064468334931080187845522863271635305755974207556834567943396778848983572149964614186356103650275628374263134387012343304355205652160929744175949381700467144554371915000541998864365050816817194757577682099038317184272559301778477404536981440865101426328099882790191152232149574733902418145751740207233730001436366549770329399550058290642078445527014869930423141738917520358021404705691388874698487105484830574350573121283403179583479975347435711335308370267626456308186283568920434707841520472205092797390217608681947339360759483057043520700281021919563177264169338796857246900965550011102192053613957000164337207577316358181161685671025852806431884210877572635358764741709735606491889492385801599082540683479388070761882998263435153622904125126411771558751749366102592817211971862181909005209844058135439885102431405526066238302702742210878194506826136825882168294732112118629127610877665263127473648937118665010642305415444635924239811568600824566651034634937272592161844999702528881737333134805588480325438838683043825529765489841414550328709516967008905502549681203191284601679136546965666565783243128072115107088209612514075273851116025030843580762198015253825724275664752227262000312707314694589120975089558377274289198194166818594934840983030146179204754893878112758513466120453431043335988385960280882285417773681702236656918548134412042414044987215147776124596036355416671112465912240877162726565005767640455776343833434791656081700950474770318038050672443559870843899927560445921795837199857802772881802327840529549267774425500694855396754411287431550556128499110763552176424211890229056015148684606716801729342869019535991451450481342542651879169361225744531126378873223462363777036075752961665628310907560489002095946156069083218219048431147377558230386768397671244861358510091541846887150619556218115385510411144756079916018953156087070048787012939685266559420192839601866783612572322076071084158598156423334328790592727125610469670763084265352595505702950726404823589462339465703828803329054459130013279513613400453770948995538409988260241049389683805363560029718056148537193188331879107790028434437449017485164115935500005344512559391246432098737703834537980037411171885227770065319905576443959498219147613188777154996182835859315929
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 40 of the certificate chain of a 3,261-digit prime (192 intermediate primes).

Certified number3,261-digit prime
Certificatedownload
Certificate chainshow step 40 of 192

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000008787409422 --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":1100000008787409422},"decimal":true,"detail":2}}'