FACTUM
ARCHIVE / 2026

WEAR SOMETHING WORTH KNOWING.

A numbered archive of ideas worth wearing.
Every one verified.

ENTER ARCHIVE ↓
DROP 01 — NOW AVAILABLE · 9 OBJECTS

ARCHIVE — ALL / PARADOX / MATH / CODE

001
LIAR PARADOX
PARADOX / VERIFIED
THIS STATEMENT
IS FALSE.
$34
002
0.999… = 1
MATH / VERIFIED
0.999… = 1EXACTLY.
$34
004
HILBERT'S HOTEL
PARADOX / VERIFIED
NO VACANCY.
ROOM AVAILABLE.∞ ROOMS
$34
005
SELF-REFUTATION
PARADOX / VERIFIED
NOBODY READS
T-SHIRTS.YOU DO.
$34
006
SHIP OF THESEUS
PARADOX / VERIFIED
SAME SHIRT.
EVERY THREAD
REPLACED.
$34
009
MONTY HALL
MATH / VERIFIED
SWITCH.1/3 → 2/3
$34
010
INFINITE ARITHMETIC
MATH / VERIFIED
∞ + 1 = ∞SOMETIMES.
$34
023
BIRTHDAY PARADOX
PARADOX / VERIFIED
23 PEOPLE.
50.7%SAME BIRTHDAY.
$34
404
MEANING NOT FOUND
CODE / VERIFIED
404
MEANING
NOT FOUND
$34

INDEX — FULL CATALOG

001LIAR PARADOXPARADOXRELEASED
0020.999… = 1MATHRELEASED
004HILBERT'S HOTELPARADOXRELEASED
005SELF-REFUTATIONPARADOXRELEASED
006SHIP OF THESEUSPARADOXRELEASED
009MONTY HALLMATHRELEASED
010INFINITE ARITHMETICMATHRELEASED
023BIRTHDAY PARADOXPARADOXRELEASED
137FINE-STRUCTURE CONSTANTPHYSICSRESERVED — NOTIFY ME
404MEANING NOT FOUNDCODERELEASED
1729HARDY–RAMANUJANNUMBERSRESERVED — NOTIFY ME
6174KAPREKAR'S CONSTANTNUMBERSRESERVED — NOTIFY ME

MANIFESTO

FACTUM is not a store of prints. It is a numbered archive of ideas worth knowing — printed on things worth wearing.

One design. One idea. One number. Every factual claim is verified. Every paradox is exactly what it claims to be.

IF IT ISN'T WORTH EXPLAINING, IT ISN'T WORTH WEARING.

Every claim on every shirt can be verified. Search the number. Read the sources. Don't trust the shirt — check it.