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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 #1100000009061620217 2,073 digits created 2026-08-09

Value

620300305353338211697514181484087507781230548684195511160831585377841909978534754907947842478407800955086571716893566513094735091579739918530146242779972123712296549132513790952589177563919610410262618090112336787126493626640300997760154468857373302787909648164436519105368293279024575705008083789845607677312780489946978819319449857270568137949195483999445829269412935244065628066358239350662968924129708050061913496561966729099616457534345809579324281975984106062448570299994322374924654033468175541889002396177146392746594149589062454887987836599372811941164421920910985115478315564485717937560973605196196913673456853348406782099409906192760089211791718824118236261820097134001658391952955024588781511333714842091613332825230707537334216458904594500397667096206832380145617066739497037243580934035762810413765201047618803968601066473765853504193979906624705803549378965345223789942244965465104937169103683217055605704985345750858743750683452546189402319609821380045257436152515329500405545769061589369597870977495934145682743093375759416338376545425950218811733278276184975512332470109929972054233952722976396119175044194004166410979305783240021183174063140337188035151428738662562427732346213729449156407081183100887118304901637205895779436118648688056743932790368106984606382831985614234643617140640314283938704169467916199616683150640987379455526210919943892750203249653312578023888253581426058800785169858095131117668836769763127507997847290506268597186028554105103155053882504960588039577517203378241125537424654220488020813115547174726647433451059055206305738656293835027026635556009153915063843503533648807420928654020767536731419555127697840892831246885878802679990030103670738913483061309548854141292217745188433708025425544584658550330185620272255906627175358173543564629734237805401364832990882010934859140815654828799163110515438731688285730864958235771705473404561764077816118822206608249383991837862332108244210303635384764153649684857831747713337574427552507649653273684320237421660854066916355449830111882046191924899466110540332546241083185268515941721
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 33 of the certificate chain of a 2,562-digit prime (190 intermediate primes).

Certified number2,562-digit prime
Certificatedownload
Certificate chainshow step 33 of 190

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009061620217 --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":1100000009061620217},"decimal":true,"detail":2}}'