PRP · Probable prime
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.
Is factor of
Primality
This is a probable prime: it passes probabilistic tests but is not yet proven.
Build an ECPP certificate (for example with Primo) and upload it - it is stored and verified locally, then the number is promoted to proven prime.
Primo input filedownload .in
From the command linefdb · curl
fdb
fdb number '11428220542581188565565807923113403700247051413854204791940538178265015479354970345941751205346170635220312129036451566238574562254823191156977878020658879862553809412233726134826277564682668931329316075687597774069863862265564736853075722707319006192816158188344752720795421874557405248784651117433826576840471738676294675273901170832170776412160171404282065632634415867149541494196162716320276177351237738151635507676158034938473059223487233532052156390405623937596058240377968532437815068365366443882934524412835771307699878562949108689725957208931360551344902063822208425310050692347117749141009408258819021180422948003157898450961852672944788562145121732666990991799737928822621798096770284879143338511982125963626513078467848804659676117274702413495089984960676558610606933928328180486074140350779' --detail 2
curl
curl -s 'https://factordb.com:4059/rpc' -H 'Content-Type: application/json' -d '{"jsonrpc":"2.0","id":1,"method":"get_number","params":{"target":{"expr":"11428220542581188565565807923113403700247051413854204791940538178265015479354970345941751205346170635220312129036451566238574562254823191156977878020658879862553809412233726134826277564682668931329316075687597774069863862265564736853075722707319006192816158188344752720795421874557405248784651117433826576840471738676294675273901170832170776412160171404282065632634415867149541494196162716320276177351237738151635507676158034938473059223487233532052156390405623937596058240377968532437815068365366443882934524412835771307699878562949108689725957208931360551344902063822208425310050692347117749141009408258819021180422948003157898450961852672944788562145121732666990991799737928822621798096770284879143338511982125963626513078467848804659676117274702413495089984960676558610606933928328180486074140350779"},"decimal":false,"detail":2}}'