144
144 is twelve dozen — a 'gross' — and the only Fibonacci number greater than 1 that is also a perfect square (12²).
Where 144 fits
Why 144 is special
144 sits at a rare mathematical intersection: it's both a perfect square (12²) and a Fibonacci number, and mathematicians have proven it's the only Fibonacci number above 1 with that property. Outside mathematics, 'a gross' — 144, or twelve dozen — is a traditional wholesale counting unit still used for goods like pencils and eggs.
Same number, different meanings
How 144 is understood across different contexts — never implying one meaning because of another.
- Mathematics
144 sits at a rare mathematical intersection: it's both a perfect square (12²) and a Fibonacci number, and mathematicians have proven it's the only Fibonacci number above 1 with that property. Outside mathematics, 'a gross' — 144, or twelve dozen — is a traditional wholesale counting unit still used for goods like pencils and eggs.
- History
'Gross' entered English from the French grosse douzaine, a 'large dozen', and named a wholesale quantity at a time when goods were counted rather than weighed. The dozen survived into everyday retail and the gross did not, because twelve is a quantity a household buys and 144 is not — which is why the word now appears mainly on trade invoices and in the phrase 'great gross' for 1,728.
- Everyday life
There are 144 items in a gross (worldwide, wholesale trade). Twelve dozen. A great gross is twelve gross, or 1,728 — the same duodecimal structure carried up another step, and the reason both survive is that they were units of packing rather than of counting.
- Technology & computing
144 Hz became the common step above 60 Hz for computer monitors because it is exactly six times 24 — the frame rate of cinema — so 24 fps material divides into it evenly and plays without the uneven stutter a 60 Hz panel produces. It is also twice 72 and a multiple of 48. The figure is chosen for its divisibility rather than for anything the eye does at that rate.
- Religion & belief
Revelation 7:4 and 14:1 give the number of those sealed as 144,000 — twelve thousand from each of twelve tribes, so the figure is built from 12 × 12 × 1,000 rather than chosen for itself. Whether it is meant as a literal count or as a symbol of completeness is disputed between traditions: most mainstream Christian commentary reads it symbolically, while Jehovah's Witnesses hold it to be a literal number of individuals. Numberwise records the figure and the dispute, not a resolution of it.
Not just a mathematical number
144is also used in ways where ordinary arithmetic doesn't apply — each listed below with what genuinely does and doesn't follow from it.
- Mathematical number
A genuine quantity — its mathematical properties (prime, square, factors, and so on) are real facts about it.
A genuine quantity that ordinary arithmetic applies to — it can be prime, even, a perfect square, added to another number meaningfully, and so on.
- Quantity
Also used as a quantity — Dozen-based counting systems.
A genuine count or amount of something — closest to a pure mathematical number, but tied to what's being counted (12 eggs is a genuine amount of eggs, not an abstract mathematical fact about the number 12).
144 is part of
Factors & digit properties
- Divisors (15)
- 1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 36, 48, 72, 144
- Prime factorisation
- 2^4 × 3^2
- Digit sum
- 9
- Digital root
- 9
Representations
- Decimal
- 144
- Scientific notation
- 1.440 × 10^2
Roman numerals
C X L I V
CXLIV uses the subtractive pair IV: one before five — five minus one.
Binary
1 0 0 1 0 0 0 0
1 × 128 + 0 × 64 + 0 × 32 + 1 × 16 + 0 × 8 + 0 × 4 + 0 × 2 + 0 × 1 = 144
Octal
2 2 0
2 × 64 + 2 × 8 + 0 × 1 = 144
Hexadecimal
9 0
9 × 16 + 0 × 1 = 144
Read as powers of two: 128 + 16 = 144.
In historical numeral systems
Egyptian
1 coil of rope, 4 hobbles, 4 strokes
1 × 100 + 4 × 10 + 4 × 1 = 144. The signs are simply repeated and added; where they sit on the line is a matter of layout, not value.
Babylonian
2 vertical wedges (sixties place), 2 corner wedges + 4 vertical wedges (units place)
2 × 60 + 24 = 144. Places are separated by a space on the tablet, with the higher place written first.
Greek (Ionic)
rho, then mu, then delta, marked as a numeral
rho-mu-delta + keraia
rho + mu + delta written in descending order and added — the letters carry their values wherever they stand, so this is addition, not place value.
Hebrew numerals
qof, then mem, then dalet
qof-mem-dalet
qof (100) + mem (40) + dalet (4) = 144, written in descending order.
Maya
1 bar + 2 dots (upper, twenties place) over 4 dots (lower, units place)
7 × 20 + 4 = 144. Places stack vertically with the smallest at the bottom, so the upper group is worth twenty times the lower.
Systems that simply cannot reach this value are left out. Where a script needs a font most readers do not have, the reading is given instead of the glyphs — see number systems for each system in full.
Other mathematical patterns
- Abundant number
- Powerful number
- Harshad (Niven) number
Related numbers & connections
1,728 is twelve gross, or twelve cubed: the number of cubic inches in a cubic foot. Both numbers come from the same habit of counting in twelves.
View 1728 →144 is twelve dozen — a gross — and the unit above the dozen in trade counting.
144 Hz is six times cinema's 24 fps, which is why 24 fps material plays on a 144 Hz panel without the judder a 60 Hz panel produces.
Mathematically related
Shares a distinctive class
- belongs toDozen-based counting systems
why?
Strength 0.50, confidence "high".
Numbers Around Us
- appears inFilm and video frame-rate standards
why?
Strength 0.50, confidence "high".
Other connections
- contrasts with2707
why?
Strength 0.50, confidence "high".
History
'Gross' entered English from the French grosse douzaine, a 'large dozen', and named a wholesale quantity at a time when goods were counted rather than weighed. The dozen survived into everyday retail and the gross did not, because twelve is a quantity a household buys and 144 is not — which is why the word now appears mainly on trade invoices and in the phrase 'great gross' for 1,728.
DocumentedHistory
Everyday life
There are 144 items in a gross (worldwide, wholesale trade). Twelve dozen. A great gross is twelve gross, or 1,728 — the same duodecimal structure carried up another step, and the reason both survive is that they were units of packing rather than of counting.
DocumentedEveryday lifeGeography: worldwide, wholesale tradeA gross of 144 remains a wholesale unit in stationery, fastenings and printing. It persists because those trades pack in twelves, and it connects to 1,728 — the great gross, and also the cubic inches in a cubic foot.
DocumentedEveryday lifeA 'gross' — twelve dozen, or 144 — is a traditional counting unit historically used in wholesale and retail trade for goods sold in bulk, such as pencils, eggs, or buttons, and remains part of the imperial system of units.
DocumentedEveryday life
Technology & computing
144 Hz became the common step above 60 Hz for computer monitors because it is exactly six times 24 — the frame rate of cinema — so 24 fps material divides into it evenly and plays without the uneven stutter a 60 Hz panel produces. It is also twice 72 and a multiple of 48. The figure is chosen for its divisibility rather than for anything the eye does at that rate.
DocumentedTechnology & computing144p is the lowest rung of the standard online video quality ladder, meaning 144 horizontal lines of picture. The figure descends from QCIF, a videoconferencing format of 176 × 144 pixels standardised for low-bandwidth links, and it survives in streaming menus as the setting that will play on almost any connection. It is a legacy of 1990s telephony bandwidth rather than a modern design choice.
DocumentedTechnology & computing
Religion & belief
Revelation 7:4 and 14:1 give the number of those sealed as 144,000 — twelve thousand from each of twelve tribes, so the figure is built from 12 × 12 × 1,000 rather than chosen for itself. Whether it is meant as a literal count or as a symbol of completeness is disputed between traditions: most mainstream Christian commentary reads it symbolically, while Jehovah's Witnesses hold it to be a literal number of individuals. Numberwise records the figure and the dispute, not a resolution of it.
DocumentedReligion & beliefCulture: Christian tradition
Mathematics
144 is the twelfth term of the Fibonacci sequence and also 12², so its position in the sequence equals its own square root. The squareness is the deep fact — proved in 1964 to be the only one above 1 — while the coincidence with the index is a consequence of where the sequence happens to have reached and carries no further meaning.
DocumentedMathematics144 is the only Fibonacci number greater than 1 that is also a perfect square (12² = 144) — a fact proven mathematically, not merely observed in the sequence's early terms.
DocumentedMathematics
Common questions
What is a gross?
Twelve dozen — 144. The word comes from the French grosse douzaine, a 'large dozen', and it survives on trade invoices for goods packed in twelves: pencils, buttons, fastenings. A 'great gross' is twelve gross, 1,728, which is also the number of cubic inches in a cubic foot.
Are the 144,000 in Revelation a literal count?
Traditions disagree, and the text does not settle it. The figure is built as twelve thousand from each of twelve tribes, and most mainstream Christian commentary reads that structure as a symbol of completeness rather than a headcount; Jehovah's Witnesses hold it to be a literal number of individuals. What is not in dispute is the arithmetic: 12 × 12 × 1,000.
Why are gaming monitors 144 Hz?
Because 144 is exactly six times 24, the frame rate of cinema, so 24 fps material divides into it evenly and plays without the uneven stutter a 60 Hz panel produces. It is also twice 72 and a multiple of 48. The figure is chosen for its divisibility, not because the eye does anything special at that rate.
Is 144 a prime number?
No, 144 is not prime.
What are the factors of 144?
The factors of 144 are 1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 36, 48, 72, 144.
What is 144 in Roman numerals?
144 in Roman numerals is CXLIV. IV is subtractive: one before five — five minus one. Written additively it would be CXXXXIIII, which Roman inscriptions used freely — the strict subtractive form is a later convention.
About this page's data
Mathematical facts:computed directly from the number's value — nothing to source or verify externally.
Contextual records: 9 reviewer-confirmed records, sourced and reviewed before publication.
Last reviewed: 15 July 2026