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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 #1100000008798800399 2,534 digits created 2026-05-10

Value

71676438182991340832919726309160510785804618730613860133480842832438171551064504636457570958315814905532930989916044839197321969621829630424082646293733052254259227862948640319176169172074435850101869775464874740540485000563683693102699560936478492677996056011947691180858204512200226383243709526808022762223801243169308109970085473686301147749016878471768904889785879973126575546219800703413449517625358832683775176725345295235837029024044856333166108407598621841824930195750503838553075252382829305708995988981620453693372591795590505777507770192784896914800592244771086166937211349302299266050599031176203567650875226940932512723764932607759224143074468525798529210629549523977363443417095727010045498935190814384160809052339696231353162534873808359648585475889988344899487348588167158866726747994890193077126038327503519009485804758498629433169659221666597432195240437988327594221091125117074446860840378367672781829410957365331985637268393311710740868541736481332671180302196419383348054841030089486011472284655177515918206647273441472613061850684236100743097776321398125372335494294806884343239383380658017934548285667357543249271713811187854741348733960965708402156632981379780027590949257680044169949327725133106686439804059199315072069522333287492397594240042830529313234993460909759119100820501923362555124110690245777116988118296388600134435422898961874769454820242321480082715621417248247903191385258762395041266196680259899306722728011585877182505400858480380412023461405109862326944843704587764459773526800514246686717952250794144525033811873717433809827026324543498329328828125510436835719594907564410140372487959979004449200065617403709323906288896785318261781109846837341011016915484347330306491162332021725119868039812781053232348097846653228554269945627761388076104223897387513310935735377498123355504255910338264411618321039727692459772780032004973232413953137315235315351937868826234077081516929508180546840865068257566538535194488598238555194319606833221481847086792534680886678465989809871950490631270371888255370468119132345886718864520994232985954102239669664957515462939818869319172820953005554832224151832834744102549344669000778180533687021522889930805959681039987845469018745498539417638481944126030000050159858826869777970308018839552760368449817655261469581348084532989896637966278197454183094825896415016529875504484763299550225101681551660741576754253996596879251830207066781878169865341692634099275372585716629997376510776029909201389385934186904359828797331066635867284439715961857571578599233945537
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 86 of the certificate chain of a 3,906-digit prime (235 intermediate primes).

Certified number3,906-digit prime
Certificatedownload
Certificate chainshow step 86 of 235

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000008798800399 --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":1100000008798800399},"decimal":true,"detail":2}}'