384
CWE-384 is session fixation.
- Even
- Composite
Where 384 fits
Why 384 is special
The attacker supplies the session identifier before login and the application keeps it afterwards, so authentication hands the session to the wrong person.
Same number, different meanings
How 384 is understood across different contexts — never implying one meaning because of another.
- Mathematics
The attacker supplies the session identifier before login and the application keeps it afterwards, so authentication hands the session to the wrong person.
- Technology & computing
CWE-384 covers failure to issue a new session identifier on authentication, allowing an attacker who fixed the identifier beforehand to inherit the authenticated session.
- Science
The average distance from the Earth to the Moon is about 384 thousand kilometres. Measured to millimetre precision by bouncing lasers off reflectors left by the Apollo missions. The Moon is receding by about 3.8 centimetres a year.
384 is part of
Factors & digit properties
- Divisors (16)
- 1, 2, 3, 4, 6, 8, 12, 16, 24, 32, 48, 64, 96, 128, 192, 384
- Prime factorisation
- 2^7 × 3
- Digit sum
- 15
- Digital root
- 6
Representations
- Decimal
- 384
- Scientific notation
- 3.840 × 10^2
Roman numerals
C C C L X X X I V
CCCLXXXIV uses the subtractive pair IV: one before five — five minus one.
Binary
1 1 0 0 0 0 0 0 0
1 × 256 + 1 × 128 + 0 × 64 + 0 × 32 + 0 × 16 + 0 × 8 + 0 × 4 + 0 × 2 + 0 × 1 = 384
Octal
6 0 0
6 × 64 + 0 × 8 + 0 × 1 = 384
Hexadecimal
1 8 0
1 × 256 + 8 × 16 + 0 × 1 = 384
Read as powers of two: 256 + 128 = 384.
In historical numeral systems
Egyptian
3 coils of rope, 8 hobbles, 4 strokes
3 × 100 + 8 × 10 + 4 × 1 = 384. The signs are simply repeated and added; where they sit on the line is a matter of layout, not value.
Babylonian
6 vertical wedges (sixties place), 2 corner wedges + 4 vertical wedges (units place)
6 × 60 + 24 = 384. Places are separated by a space on the tablet, with the higher place written first.
Greek (Ionic)
tau, then pi, then delta, marked as a numeral
tau-pi-delta + keraia
tau + pi + delta written in descending order and added — the letters carry their values wherever they stand, so this is addition, not place value.
Hebrew numerals
shin, then pe, then dalet
shin-pe-dalet
shin (300) + pe (80) + dalet (4) = 384, written in descending order.
Maya
3 bars + 4 dots (upper, twenties place) over 4 dots (lower, units place)
19 × 20 + 4 = 384. 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
Related numbers & connections
384 appears in Numbers in space, the topic covering numbers that carry a documented astronomy fact.
Session fixation turns on whether the identifier in the cookie is reissued at the moment of authentication.
View 6265 →Numbers Around Us
- appears inSpace and astronomy
why?
Strength 0.50, confidence "high".
Other connections
- is associated with6265
why?
Strength 0.50, confidence "high".
Technology & computing
CWE-384 covers failure to issue a new session identifier on authentication, allowing an attacker who fixed the identifier beforehand to inherit the authenticated session.
DocumentedTechnology & computingGeography: International — MITRE CWEPeriod: 2006–
Science
The average distance from the Earth to the Moon is about 384 thousand kilometres. Measured to millimetre precision by bouncing lasers off reflectors left by the Apollo missions. The Moon is receding by about 3.8 centimetres a year.
DocumentedScienceGeography: worldwide
Common questions
Is 384 a prime number?
No, 384 is not prime.
What are the factors of 384?
The factors of 384 are 1, 2, 3, 4, 6, 8, 12, 16, 24, 32, 48, 64, 96, 128, 192, 384.
What is 384 in Roman numerals?
384 in Roman numerals is CCCLXXXIV. IV is subtractive: one before five — five minus one. Written additively it would be CCCLXXXIIII, 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: 2 reviewer-confirmed records, sourced and reviewed before publication.
Last reviewed: 15 July 2026