RareBillTrue binary
The serial contains nothing but zeros and ones: 10011010. It looks like machine code, which is exactly the appeal.
How rare is it? Exactly 254 of the 100,000,000 possible eight-digit serial numbers are true binaries — about 1 in 393,701. That figure is counted, not estimated: every possible serial was run through the same engine the RareBill app uses.
How to spot one
Check that no digit other than 0 or 1 appears anywhere.
Example: 10011010 —
check this one in the lookup.
What it is worth
More than an ordinary binary, because the specific pair of digits is what makes it read as binary rather than merely repetitive.
Condition matters as much as the pattern. A crisp uncirculated note can be worth many times the same serial in worn condition, which is why RareBill shows value ranges with links to current listings rather than a single number.
Where it sits
Among the sixteen patterns RareBill checks, true binaries rank #7 by scarcity.
Only super radars, double quads, millionth notes are rarer among the patterns RareBill checks.
Check a serial now
Type any serial into the free lookup and it will tell you every pattern it matches, instantly, in your browser.