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https://issues.apache.org/jira/browse/TIKA-3544?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17412084#comment-17412084
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Dave Fisher commented on TIKA-3544:
-----------------------------------
The OP's source
[https://getcreditcardnumbers.com|https://getcreditcardnumbers.com/] produces
invalid numbers. In JSON and Javascript Numbers are always double precision
floating point.
See [https://www.w3schools.com/js/js_numbers.asp]
> Extraction of long sequences of digits from Excel spreadsheets using Tika
> 1.20 doesn’t yield the expected results
> -----------------------------------------------------------------------------------------------------------------
>
> Key: TIKA-3544
> URL: https://issues.apache.org/jira/browse/TIKA-3544
> Project: Tika
> Issue Type: Bug
> Components: parser
> Affects Versions: 1.20
> Reporter: Jitin Jindal
> Priority: Major
> Attachments: Credit Card Numbers.xlsx
>
>
> If an Excel spreadsheet contains a long sequence of digits, such as a credit
> card number, Tika 1.13 will emit the said sequence in scientific notation.
> For example, the credit card number “6011799905775830” is extracted from the
> attached spreadsheet as 6.480195344642784E15, which clearly is not the
> desired output.
> I think the impact of this issue is significant. There’s plenty of
> information that can no longer be reliably extracted from spreadsheets. Think
> credit card numbers, telephone numbers and product identifiers to name a few.
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