As of 2022-03-07, the Wikidata property NNL item ID (P3959) is used on 2,094 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 1,180
 0.0003
P243 OCLC control number 848
 0.0074
P5331 OCLC work ID 705
 0.0294
P8383 Goodreads work ID 579
 0.0179
P648 Open Library ID 574
 0.0021
P212 ISBN-13 495
 0.0069
P2969 Goodreads version/edition ID 462
 0.0109
P1274 ISFDB title ID 454
 0.0197
P957 ISBN-10 387
 0.0082
P1417 Encyclopædia Britannica Online ID 384
 0.0022
P724 Internet Archive ID 367
 0.0013
P214 VIAF ID 367
 0.0001
P227 GND ID 285
 0.0002
P5571 NooSFere book ID 259
 0.0448
P268 Bibliothèque nationale de France ID 232
 0.0004
P7439 FantLab work ID 214
 0.0362
P8189 National Library of Israel J9U ID 192
 0.0011
P435 MusicBrainz work ID 190
 0.0051
P2191 Vegetti Catalog of Fantastic Literature NILF ID 188
 0.0221
P1085 LibraryThing work ID 185
 0.0292
P6839 TV Tropes identifier 164
 0.0129
P244 Library of Congress authority ID 158
 0.0001
P3417 Quora topic ID 152
 0.0008
P6175 Bitraga work ID 129
 0.0430
P269 IdRef ID 119
 0.0002
P2034 Project Gutenberg ebook ID 107
 0.0227
P3219 Encyclopædia Universalis ID 94
 0.0027
P950 Biblioteca Nacional de España ID 78
 0.0004
P2671 Google Knowledge Graph ID 72
 0.0000
P409 Libraries Australia ID 66
 0.0010
P6262 Fandom article ID 65
 0.0013
P949 National Library of Israel ID 63
 0.0008
P1144 Library of Congress Control Number (LCCN) (bibliographic) 54
 0.0026
P7818 French Vikidia ID 51
 0.0023
P7293 PLWABN ID 38
 0.0001
P3631 Babelio work ID 35
 0.0128
P4839 Wolfram Language entity code 34
 0.0002
P7823 BookBrainz work ID 31
 0.0127
P8632 Book Marks ID 31
 0.0095
P8419 Archive of Our Own tag 22
 0.0048
P675 Google Books ID 22
 0.0022
P8179 Canadiana Name Authority ID 22
 0.0004
P3553 Zhihu topic ID 21
 0.0013
P4342 Store norske leksikon ID 21
 0.0003
P436 MusicBrainz release group ID 21
 0.0001
P691 NKCR AUT ID 21
 0.0000
P1242 Theatricalia play ID 19
 0.0056
P2163 FAST ID 19
 0.0000
P8885 Namuwiki ID 17
 0.0033
P1695 NLP ID (unique) 17
 0.0003

Closest properties by Jaccard index

IDLabelIntersection cardinalityJaccard index
P5571 NooSFere book ID 259
 0.0448
P6175 Bitraga work ID 129
 0.0430
P7439 FantLab work ID 214
 0.0362
P5331 OCLC work ID 705
 0.0294
P1085 LibraryThing work ID 185
 0.0292
P2034 Project Gutenberg ebook ID 107
 0.0227
P2191 Vegetti Catalog of Fantastic Literature NILF ID 188
 0.0221
P1274 ISFDB title ID 454
 0.0197
P8383 Goodreads work ID 579
 0.0179
P6839 TV Tropes identifier 164
 0.0129
P3631 Babelio work ID 35
 0.0128
P7823 BookBrainz work ID 31
 0.0127
P2969 Goodreads version/edition ID 462
 0.0109
P8632 Book Marks ID 31
 0.0095
P957 ISBN-10 387
 0.0082
P243 OCLC control number 848
 0.0074
P212 ISBN-13 495
 0.0069
P1242 Theatricalia play ID 19
 0.0056
P435 MusicBrainz work ID 190
 0.0051
P7487 Kinematoscope literary work ID 12
 0.0051
P8294 AusStage work ID 15
 0.0050
P8419 Archive of Our Own tag 22
 0.0048
P3235 PhilPapers topic 13
 0.0046
P1149 Library of Congress Classification 16
 0.0042
P8211 Bookogs work ID 7
 0.0033
P8885 Namuwiki ID 17
 0.0033
P7993 Treccani's Dizionario di Filosofia ID 14
 0.0029
P10319 Douban book works ID 6
 0.0028
P3219 Encyclopædia Universalis ID 94
 0.0027
P1144 Library of Congress Control Number (LCCN) (bibliographic) 54
 0.0026
P3976 BVMC work ID 7
 0.0025
P6135 VD 18 ID 5
 0.0024
P7818 French Vikidia ID 51
 0.0023
P9365 Modernist Commons ID 5
 0.0023
P1417 Encyclopædia Britannica Online ID 384
 0.0022
P675 Google Books ID 22
 0.0022
P648 Open Library ID 574
 0.0021
P10291 Wikisimpsons ID 8
 0.0019
P6580 National Book Foundation book ID 4
 0.0019
P2187 BiblioNet publication ID 4
 0.0019
P3732 PhilPapers record 4
 0.0019
P5792 NooSFere series ID 5
 0.0018
P3308 lib.reviews ID 4
 0.0017
P1025 SUDOC editions 6
 0.0017
P3569 Cultureel Woordenboek ID 12
 0.0016
P9622 Price One Penny work ID 5
 0.0016
P6395 Apple Books book ID (American version) 3
 0.0014
P8070 ToposText work ID 4
 0.0014
P7648 OverDrive series ID 3
 0.0014
P7822 Italian Vikidia ID 4
 0.0014