As of 2022-03-07, the Wikidata property Unique Property Reference Number (P8399) is used on 60 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
P646 Freebase ID 23
 0.0000
P718 Canmore ID 14
 0.0001
P709 Historic Scotland ID 12
 0.0002
P1216 National Heritage List for England number 12
 0.0000
P454 Structurae structure ID 7
 0.0004
P7630 Dictionary of Scottish Architects building ID 6
 0.0009
P1004 MusicBrainz place ID 6
 0.0008
P214 VIAF ID 6
 0.0000
P3749 Google Maps Customer ID 5
 0.0001
P3417 Quora topic ID 5
 0.0000
P7411 Pubs Galore ID 4
 0.0003
P4971 UK Provider Reference Number 4
 0.0002
P2253 DfE URN 4
 0.0001
P1417 Encyclopædia Britannica Online ID 4
 0.0000
P4839 Wolfram Language entity code 4
 0.0000
P244 Library of Congress authority ID 4
 0.0000
P7859 WorldCat Identities ID 4
 0.0000
P1566 GeoNames ID 4
 0.0000
P1602 Art UK venue ID 3
 0.0015
P5652 Carthalia ID 3
 0.0004
P7772 Atlas Obscura identifier 2
 0.0002
P3134 TripAdvisor ID 2
 0.0001
P5464 A Church Near You church ID 2
 0.0001
P4527 UK Parliament thesaurus ID 2
 0.0001
P4129 Cinema Treasures ID 2
 0.0000
P2581 BabelNet ID 2
 0.0000
P3500 Ringgold ID 2
 0.0000
P402 OpenStreetMap relation ID 2
 0.0000
P2013 Facebook ID 2
 0.0000
P2002 Twitter username 2
 0.0000
P213 ISNI 2
 0.0000
P2468 Theatricalia theatre ID 1
 0.0016
P1870 Name Assigning Authority Number 1
 0.0014
P9000 World History Encyclopedia ID 1
 0.0010
P4079 Theatres Trust Database ID 1
 0.0008
P4702 Google Arts & Culture partner ID 1
 0.0007
P5432 setlist.fm venue ID 1
 0.0007
P4146 Athenaeum museum ID 1
 0.0006
P1699 SkyscraperPage building ID 1
 0.0006
P1481 vici.org ID 1
 0.0005
P3977 Songkick venue ID 1
 0.0005
P6713 Australian War Memorial ID 1
 0.0005
P9284 GB1900 ID 1
 0.0003
P4535 EUTA theatre ID 1
 0.0003
P4173 Instagram location ID 1
 0.0003
P4848 Libraries.org ID 1
 0.0003
P455 Emporis building ID 1
 0.0002
P1430 OpenPlaques subject ID 1
 0.0002
P1936 Digital Atlas of the Roman Empire ID 1
 0.0001
P4003 Facebook page ID 1
 0.0001

Closest properties by Jaccard index

IDLabelIntersection cardinalityJaccard index
P2468 Theatricalia theatre ID 1
 0.0016
P1602 Art UK venue ID 3
 0.0015
P1870 Name Assigning Authority Number 1
 0.0014
P9000 World History Encyclopedia ID 1
 0.0010
P7630 Dictionary of Scottish Architects building ID 6
 0.0009
P1004 MusicBrainz place ID 6
 0.0008
P4079 Theatres Trust Database ID 1
 0.0008
P4702 Google Arts & Culture partner ID 1
 0.0007
P5432 setlist.fm venue ID 1
 0.0007
P4146 Athenaeum museum ID 1
 0.0006
P1699 SkyscraperPage building ID 1
 0.0006
P1481 vici.org ID 1
 0.0005
P3977 Songkick venue ID 1
 0.0005
P6713 Australian War Memorial ID 1
 0.0005
P454 Structurae structure ID 7
 0.0004
P5652 Carthalia ID 3
 0.0004
P9284 GB1900 ID 1
 0.0003
P4535 EUTA theatre ID 1
 0.0003
P7411 Pubs Galore ID 4
 0.0003
P4173 Instagram location ID 1
 0.0003
P4848 Libraries.org ID 1
 0.0003
P455 Emporis building ID 1
 0.0002
P7772 Atlas Obscura identifier 2
 0.0002
P1430 OpenPlaques subject ID 1
 0.0002
P4971 UK Provider Reference Number 4
 0.0002
P709 Historic Scotland ID 12
 0.0002
P718 Canmore ID 14
 0.0001
P2253 DfE URN 4
 0.0001
P1936 Digital Atlas of the Roman Empire ID 1
 0.0001
P4003 Facebook page ID 1
 0.0001
P3134 TripAdvisor ID 2
 0.0001
P5464 A Church Near You church ID 2
 0.0001
P3749 Google Maps Customer ID 5
 0.0001
P2966 National Library of Wales Authority ID 1
 0.0001
P4527 UK Parliament thesaurus ID 2
 0.0001
P8167 WhatDoTheyKnow organisation ID 1
 0.0001
P836 GSS code (2011) 1
 0.0001
P4129 Cinema Treasures ID 2
 0.0000
P1216 National Heritage List for England number 12
 0.0000
P1679 Art UK artwork ID 1
 0.0000
P2581 BabelNet ID 2
 0.0000
P3417 Quora topic ID 5
 0.0000
P5383 archINFORM project ID 1
 0.0000
P1417 Encyclopædia Britannica Online ID 4
 0.0000
P3500 Ringgold ID 2
 0.0000
P4839 Wolfram Language entity code 4
 0.0000
P402 OpenStreetMap relation ID 2
 0.0000
P2013 Facebook ID 2
 0.0000
P2002 Twitter username 2
 0.0000
P8189 National Library of Israel J9U ID 1
 0.0000