0100e95004038000 [top] [ TRENDING ]

The serial number (40 bits) is large enough for unique device tracking. The trailing 8000 might be a simple CRC-16 or a fixed magic number. Many systems use 0x8000 (32768 decimal) as an invalid or sentinel value. If we treat the first 6 bytes ( 0100e9500403 ) as data and 0x8000 as a checksum, we could test common CRC-16-CCITT or XOR checksums.

00 80 03 04 50 e9 00 01 → 0x0080030450e90001 0100e95004038000

As a decimal: 36,055,477,910,044,673

Big-endian bytes: 0x0100e95004038000