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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 #1100000009065266820 1,642 digits created 2026-08-09

Value

1639835236544084464073878036576517891147878311529128250012546607023335148699229060542864357326022878422369534217896422446162537481047800337820730757171059429286587037277591566663458763549410825721958332850701520538385425599527620255437467578398989630648295176182854869424605404293330347275660815136798990908246147449260268276322361399150254442276829643021586771230119767549110939872926010968022014752238923448088450372569739819202061372997521996573554359040138754059542793776031366388381143043758683786605642233947569508025675453781994308366416507768618120876166064503525858657688091388723748537586996091905362585996795666173681132874217960098816366548453976542981703242504284687808984365624291140836215214565475505189807098471770032153049131737848110700180850079938709289363097829777702854827687126278013550990807498552449675750017633806077600657545411030174854242591085349666925570216128989813237124472418163109516684432845532791388266591850912491496495168820751686736061549985190985178038576287887228946698101562318840215064848125477546677467280304079301707907119371743112677417376140114041078013156054383587688534790464809342302853647465020370521108847883623918672277573581430846127625626896227513807897004656313138350299200183046322683509580782368800893265975039955142655582036706822325124103539305105973506865145834203873036389497446033247338083293894394492185689783987134363097742226662260920617242646558564926258501134768866513152887867961333843985394971393621348472758781670329599405649781497875849927644214412553817771585693916090326227992758167482351618768300477520963137823257633450118964069724139400575701470144984859850323125057
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 55 of the certificate chain of a 2,393-digit prime (179 intermediate primes).

Certified number2,393-digit prime
Certificatedownload
Certificate chainshow step 55 of 179

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009065266820 --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":1100000009065266820},"decimal":true,"detail":2}}'