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 '68217804469620841971606569960255408831828795875356154391379841489811449221303204477338348911446000194291121022848995528315495401517865264775202363733112995630366556753273568459624310401181133825574771276386917217054626107634841593651465045655769255488393951120781915076714451653924041765901337790294327545678369981300964523323499640988319480725431195257303789681301296856727866730790828952460953816260644412727732927157900596668201460946919604297586785357871338839166873505139880325710220342514161366425934864155291673321881100221844470766236243042392296276653403961653724219088121637322245202988122893989834844200798373546317372767635696416846651851846133019570501338833853465149852578985071845906735573730601516287048394769718539382058678234354742463396899311445862229000245352279556088933771721288080799508359042396774364696510835517005209932826052325779716923813158024902195764115315769080476990363721920085744941687146332024556615272543903777692892451335124377995664756161077575427679926250478567055316633351053301354891471299213487599706155316745243783179627221435981838973309083886324098614953787860867005895051474592243933083249478709389133243294652761651271437532076779399861310178807559685669353915974500180685279367845532068918088968784879270024034184292835723200387211880488572038364289786843569731262659273557561391831027523424045804239835225707068759645147599563055540451539820678049473862929296553366290056403733777467371191331058767318753194548590600868685776378019368103644014246577635430347431342053397693370304177117267896547498273337928032327929067726319352807209394576624649794191843132881140170280818194497949807517814080452168444593110135217720867889532789280300928889607500529052274364876200379442376363483344077420842087564739512801097017408022094091257926056685552618875433699090838117' --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":"68217804469620841971606569960255408831828795875356154391379841489811449221303204477338348911446000194291121022848995528315495401517865264775202363733112995630366556753273568459624310401181133825574771276386917217054626107634841593651465045655769255488393951120781915076714451653924041765901337790294327545678369981300964523323499640988319480725431195257303789681301296856727866730790828952460953816260644412727732927157900596668201460946919604297586785357871338839166873505139880325710220342514161366425934864155291673321881100221844470766236243042392296276653403961653724219088121637322245202988122893989834844200798373546317372767635696416846651851846133019570501338833853465149852578985071845906735573730601516287048394769718539382058678234354742463396899311445862229000245352279556088933771721288080799508359042396774364696510835517005209932826052325779716923813158024902195764115315769080476990363721920085744941687146332024556615272543903777692892451335124377995664756161077575427679926250478567055316633351053301354891471299213487599706155316745243783179627221435981838973309083886324098614953787860867005895051474592243933083249478709389133243294652761651271437532076779399861310178807559685669353915974500180685279367845532068918088968784879270024034184292835723200387211880488572038364289786843569731262659273557561391831027523424045804239835225707068759645147599563055540451539820678049473862929296553366290056403733777467371191331058767318753194548590600868685776378019368103644014246577635430347431342053397693370304177117267896547498273337928032327929067726319352807209394576624649794191843132881140170280818194497949807517814080452168444593110135217720867889532789280300928889607500529052274364876200379442376363483344077420842087564739512801097017408022094091257926056685552618875433699090838117"},"decimal":false,"detail":2}}'