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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 #1100000009015012978 2,500 digits created 2026-07-29

Value

2063735392372698619931311604591208732835336086924367244384623193137018315237308397611069231266147511077307864353315804963900056162114921623026938505493636753794208765303219152290333197376133111977670660980484361706035540258098007977738239819867415292051772103680890222228635951273517259268110385999946751361283247904618411756917432587298619764028090597260244852535091734467406483703241290455043018925370463119098690896130798236259246399462250365525107656821345894263703868378371414251558582773886199007533861953561517671844040266474187458034052752100580959759474392601669530795707344972554865095793840013853304118931610701635662325846383410132887369119402810168592610464013268637766178894786714883560819132133236097184586592831135978180546322571578663822436364399424245281697777467596210530214116891554924123239386125044350463238395874168857555139751996021396552772270203720745422204780750903824693130487271313398935421809429804829247695854562751750212257720019399885016780943867736438399173713970327297730443423304176344021454820047303995618334854398220447852909126297263418379194156790754913480234047591304305846008077072605178404919772827118488943594647690103847105149902381719536660237726336213794723668195005818615602604262413205571811505868905065700807708915143300514046622623703676606767728113043972196608929916668391797527060399251104666653108295301652710809293080176113719988408445305590263482337964956181189438550999097713504715573227192210764564669371294254904615310145392090131048074124571408225065245749181258360090692940591788196267124552553875058012047356993133379561864567084501733952602314127626839711001421128425393936366833530225341366741078143418092948719712662294738137384548747181321536931293287975885110318664495930233056949218978481979417907307671351809289800379806262227234501140918197394135846903010316569838568520340871647908303794438472592191289085001002039844340661212415371332572026942544247447546254621927331801083103283560283677230464983746646575775024077316382086665284292957008486008507861584691178097712869016369464152845111183608337844590495396985901984664665686755960929820164580161340854556388290767053120658651157405295106894486890443808548674418900120529341583997947728965291636716312723422841294720636313747399486744798811262678931460320645148217179900580880128508451627271169940776787653849617158607301372413007998249170914077915644189841624407881868145422702039139169066904221667309348264990411844531193148787695727948885144307711761789631041815697534486887
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 16 of the certificate chain of a 2,702-digit prime (196 intermediate primes).

Certified number2,702-digit prime
Certificatedownload
Certificate chainshow step 16 of 196

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009015012978 --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":1100000009015012978},"decimal":true,"detail":2}}'