As of 2022-03-07, the Wikidata property PCP reference number (P381) is used on 13,024 items as main value on statements (not counting qualifiers) of the Q and P namespaces.

Closest properties: by cardinality of intersection, by Jaccard index.

Display properties of the following types:                                    

Closest properties by cardinality of intersection

IDLabelIntersection cardinalityJaccard index
P2671 Google Knowledge Graph ID 2,017
 0.0003
P214 VIAF ID 1,143
 0.0004
P7859 WorldCat Identities ID 755
 0.0004
P3066 GLAM Identifier 722
 0.0517
P646 Freebase ID 654
 0.0001
P9665 EGID 625
 0.0476
P227 GND ID 514
 0.0004
P244 Library of Congress authority ID 389
 0.0003
P8493 Denkmaldatenbank Thurgau ID 371
 0.0284
P902 HDS ID 328
 0.0071
P213 ISNI 277
 0.0002
P5383 archINFORM project ID 203
 0.0040
P791 ISIL 146
 0.0043
P269 IdRef ID 118
 0.0002
P454 Structurae structure ID 98
 0.0033
P268 Bibliothèque nationale de France ID 94
 0.0002
P691 NKCR AUT ID 93
 0.0002
P6782 ROR ID 91
 0.0008
P2427 GRID ID 91
 0.0008
P3407 Klosterdatenbank ID 89
 0.0051
P954 IBNR ID 76
 0.0029
P722 UIC station code 75
 0.0018
P1566 GeoNames ID 74
 0.0000
P3500 Ringgold ID 70
 0.0006
P8181 SNCF Station Identifier 54
 0.0031
P6155 Sotheby's Museum Network ID 50
 0.0035
P1004 MusicBrainz place ID 47
 0.0023
P402 OpenStreetMap relation ID 43
 0.0002
P5768 Osservatorio culturale del Cantone Ticino ID 42
 0.0031
P8448 Benerail station ID 42
 0.0023
P1936 Digital Atlas of the Roman Empire ID 41
 0.0021
P2971 GCatholic church ID 39
 0.0016
P4839 Wolfram Language entity code 39
 0.0002
P2581 BabelNet ID 35
 0.0004
P2002 Twitter username 35
 0.0001
P2013 Facebook ID 34
 0.0001
P5652 Carthalia ID 31
 0.0015
P2003 Instagram username 31
 0.0002
P1362 Theaterlexikon der Schweiz ID 26
 0.0018
P757 World Heritage Site ID 26
 0.0013
P1417 Encyclopædia Britannica Online ID 26
 0.0001
P3820 Flanders Arts Institute venue ID 24
 0.0015
P8974 SAPA ID 24
 0.0007
P7772 Atlas Obscura identifier 22
 0.0010
P8189 National Library of Israel J9U ID 22
 0.0001
P4146 Athenaeum museum ID 19
 0.0013
P9756 Schoenberg Database of Manuscripts name ID 19
 0.0008
P3134 TripAdvisor ID 19
 0.0007
P8593 Hikr waypoint ID 17
 0.0013
P3417 Quora topic ID 17
 0.0001

Closest properties by Jaccard index

IDLabelIntersection cardinalityJaccard index
P3066 GLAM Identifier 722
 0.0517
P9665 EGID 625
 0.0476
P8493 Denkmaldatenbank Thurgau ID 371
 0.0284
P902 HDS ID 328
 0.0071
P3407 Klosterdatenbank ID 89
 0.0051
P791 ISIL 146
 0.0043
P5383 archINFORM project ID 203
 0.0040
P6155 Sotheby's Museum Network ID 50
 0.0035
P454 Structurae structure ID 98
 0.0033
P5768 Osservatorio culturale del Cantone Ticino ID 42
 0.0031
P8181 SNCF Station Identifier 54
 0.0031
P954 IBNR ID 76
 0.0029
P8448 Benerail station ID 42
 0.0023
P1004 MusicBrainz place ID 47
 0.0023
P1936 Digital Atlas of the Roman Empire ID 41
 0.0021
P722 UIC station code 75
 0.0018
P1362 Theaterlexikon der Schweiz ID 26
 0.0018
P2971 GCatholic church ID 39
 0.0016
P5652 Carthalia ID 31
 0.0015
P3820 Flanders Arts Institute venue ID 24
 0.0015
P4146 Athenaeum museum ID 19
 0.0013
P757 World Heritage Site ID 26
 0.0013
P8593 Hikr waypoint ID 17
 0.0013
P7772 Atlas Obscura identifier 22
 0.0010
P1838 PSS-archi ID 15
 0.0010
P5490 artist-info location ID 12
 0.0009
P9756 Schoenberg Database of Manuscripts name ID 19
 0.0008
P6782 ROR ID 91
 0.0008
P2427 GRID ID 91
 0.0008
P5834 Leading Hotels of the World hotel ID 10
 0.0008
P7764 Archives Portal Europe ID 15
 0.0008
P8974 SAPA ID 24
 0.0007
P3134 TripAdvisor ID 19
 0.0007
P1870 Name Assigning Authority Number 9
 0.0007
P3500 Ringgold ID 70
 0.0006
P4535 EUTA theatre ID 10
 0.0006
P1481 vici.org ID 9
 0.0006
P8412 Swiss Timber Bridges ID 7
 0.0005
P3977 Songkick venue ID 8
 0.0005
P1255 HelveticArchives ID 7
 0.0005
P1276 Dictionnaire du Jura ID 6
 0.0004
P1584 Pleiades ID 9
 0.0004
P214 VIAF ID 1,143
 0.0004
P2581 BabelNet ID 35
 0.0004
P7859 WorldCat Identities ID 755
 0.0004
P227 GND ID 514
 0.0004
P3642 ARCHON code 6
 0.0004
P4829 Swiss Enterprise Identification Number 5
 0.0004
P5760 Petit Futé site ID 5
 0.0004
P8068 ToposText place ID 6
 0.0003