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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 #1100000008680031255 1,635 digits created 2026-03-12

Value

220599737609117747551780804303568957153977729291319140192988111274147167232207481218751439340672975720967656107789552931746956291665503135664922388707705270030609982100390310950443217252093504004211060852918455081220648174266087005154436289247822749733561541403768243945572236672269711007844703512038681643209005929420337165820822944446843566700660925233026362029368114267807663980242542173834030030644223568059433312267467637324750201116571384609641171101026701402406790187676644729438043433395523803599038862478783627301892488916309918579733658221331256952827731151705483363155991519014012238127543259487973038412112596159958199637908103652569233732518814366199145537130985612341654697648827978886684958714723740878243970675855272494356184820602768119328504280101200082693776934965614880765927222154192634803968259473827730388370751610908042667162323407651585896742225959470067130943567011731991097434809244144808271278689236386131697734558151301174480431458854011084740036422435839560685054843420609951932208891562494273306481973530559676149310702411042466497498216072379202053632059466874627458111764653391211812243764244461303907030382506065333236555199416780332096748098890424712035532415362259486673333948533073214558874885768890134862800098431639962417129142045389873747559102998665670682792592127260138187685982220294329126104317420685015008063134994705221881104628058702773736124232611219570306189905801099762807756334063529730755640826645429451288621487246671031175278792608111357959687020138252763618670031281901396437491166670471381925997900831311328970680770384265295747390483405783970511099650954058605536718524529127721
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 34 of the certificate chain of a 1,975-digit prime (206 intermediate primes).

Certified number1,975-digit prime
Certificatedownload
Certificate chainshow step 34 of 206

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000008680031255 --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":1100000008680031255},"decimal":true,"detail":2}}'