So, native GH numbers only the replies so ETF's post is 0 and the first reply is Reply #1. If your'e using Tapatalk (generic forum browser app), that UI shows ETFs first post as #1.
Technically 'post # 6482' is asianboy2000 and 'reply # 6482' is shinz0.
You'll need ETF to verify. Depending on which number he entertained as the start of the range of entry numbers, you'll be able to know which post it is
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This isn't quite the full answer. On desktop and mobile (NOT tapalalk) I see asainboy2000 as #6482.
However, I have my post order switched. Under Profile - Look and Layout, select the option for "Show most recent posts at the top." When this is enabled, OP counts as #1, when disabled OP counts as #0.
This has nothing to do with mobile vs desktop, but likely that Tapatalk is using the reversed ordering that GH forum offers, which is throwing off the numbering for most mobile users.