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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 #1100000009057951388 1,205 digits created 2026-08-08

Value

65009604343218634131591732617101662107817143718896742059300043478771660854197841967145801026156164400619002242369152003166085068075928496779098252435092107023712094510294643937998717403933395928536479841959469869880692972282882219301745197333022540340315033839987669311674908172425905181044956846761608050292588287453885137208231036799135774838012640253755659822185601350806671362004997333302335772326854084617259939520820011249047234918283171873333845293722592927184816976859617940339738236173712965108606237591260526715809450466947678004664302717374816894134686088170535395479476705765132294598247795278735952953904167165593974476276431303451691625316294798556800609945778668995100289661983352981458816671447726900073388503504774622839015403572812659396416057082550487005705554685768785468714581552808884034744310793440341116533116975527334773048414002886811386457159469037021248970790891957201730293354503487574856855757450665770560119649482991116809862959143325953582490829438802355492525396988671764530787122846898371224125149426491944358277693071452077680340226722671892777612798924663075839933589498288567082037753909136803011191064368556498153051037905404534830930449777618098084801726486402186977
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 87 of the certificate chain of a 2,254-digit prime (178 intermediate primes).

Certified number2,254-digit prime
Certificatedownload
Certificate chainshow step 87 of 178

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009057951388 --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":1100000009057951388},"decimal":true,"detail":2}}'