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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 #1100000008678600560 2,155 digits created 2026-03-11

Value

5091159230160833132718886145754262744010038307861195572154074001128432048292637803253190578482645040970072399748178023847229050579528397807882766581955321894351747149104377413586806554270180924049090979813361055104157309098191102858743646745477058760549187371034299980571518225760472603468641979196523962465199033793217898096896813887265551824055187717499990696846666888638428590878278141063095237558574647883370217834286815802226337201885652926693966353734757704391492254698691938991764051096342906137084921024179562775843877576661724288946854594647508593222430579111836935064220995112815095222767391323516100219719840859940899456741266151550119684478209509112408541848151386132846590471698997535805483112039181218944946785524868260496178585123934314222867256600217992865913005339162996056816171853600709021125438246497135747167595647135365574150708767226605030835388885565921697971197678558260952541352323016501379675443076931873001706963408269048388724208610900003788270011481688491776719484842395822678248949736246604793648666223031778805853261112965229921478995906667388283237340759862238603937678704443832414721914059855226468891299119356851975654662431733966663910905261203709970042065946023170655714524080801357415615370491726623710322570985900779944605751991916521739040146199075945140901639975997762027400609572939922387363007847027574696560636070074399738434016876477957104195651245477535645004814652808781947848598737864041873043287675978211645949957238426305231862814814405037709019406304841740118895651859799450651884664607685317645026848578449009836150778467615808142918016000126644412547902825273696072250958495994502793876945123300549577218484244136250172241209333677244291374028644014659452880947723433033280084266559302616632248867948875980558809293208499018154772363851101293210475529602320478047913509139905894841583216623032141934697552255632960471102534408032413969919165226857637305836872978180869112014355275396597521752261789471037130478081998503540756159162715722206031298435390367364784130395148068418730698121727270236923148905437767335665985111365408567231756215766263502100138856855855820498115306921364976730672146424499221
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 7 of the certificate chain of a 2,250-digit prime (156 intermediate primes).

Certified number2,250-digit prime
Certificatedownload
Certificate chainshow step 7 of 156

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000008678600560 --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":1100000008678600560},"decimal":true,"detail":2}}'