ISBN 1863023861 hat failed the check­sum digit test.
The following 16 formally correct ISBNs were determined. Starting from these ISBNs the value 1863023861 that you input could have resulted frome one error (error in one digit or transposition of two digits.) You can now check using the links given for the catalogs of amazon.co.uk, amazon.com and amazon.de whether any book is listed for the respective URL. To the home page
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ISBN prefix group: English language
ISBNas­su­med er­rorCatalogs for checking
1-163-02386-82nd and 10th digits were swap­ped. amazon.co.uk amazon.com amazon.de
1-363-02386-1second digit was chan­ged. amazon.co.uk amazon.com amazon.de
1-80362-386-13rd and 5th digits were swap­ped. amazon.co.uk amazon.com amazon.de
1-82306-386-13rd and 6th digits were swap­ped. amazon.co.uk amazon.com amazon.de
1-83302-686-13rd and 7th digits were swap­ped. amazon.co.uk amazon.com amazon.de
1-86102-386-34th and 10th digits were swap­ped. amazon.co.uk amazon.com amazon.de
1-86302-086-1seven­th digit was chan­ged. amazon.co.uk amazon.com amazon.de
1-86302-346-1eighth digit was chan­ged. amazon.co.uk amazon.com amazon.de
1-86302-380-1ninth digit was chan­ged. amazon.co.uk amazon.com amazon.de
1-86302-386-0tenth digit was chan­ged. amazon.co.uk amazon.com amazon.de
1-86304-386-1sixth digit was chan­ged. amazon.co.uk amazon.com amazon.de
1-86392-386-1fifth digit was chan­ged. amazon.co.uk amazon.com amazon.de
1-86602-386-1fourth digit was chan­ged. amazon.co.uk amazon.com amazon.de
1-883023-66-13rd and 8th digits were swap­ped. amazon.co.uk amazon.com amazon.de
 
ISBN prefix group: French language
ISBNas­su­med er­rorCatalogs for checking
2-86302-386-1first digit was chan­ged. amazon.co.uk amazon.com amazon.de
 
ISBN prefix group: [no known group prefix]
ISBNas­su­med er­rorCatalogs for checking
68130238611st and 3rd digits were swap­ped. amazon.co.uk amazon.com amazon.de

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