13,888
ISO/IEC 13888 covers non-repudiation.
- Even
- Composite
Where 13,888 fits
Why 13,888 is special
It addresses proving that a party sent or received something, which is a legal requirement rather than a technical one, and is why it exists separately.
Factors & digit properties
- Divisors (28)
- 1, 2, 4, 7, 8, 14, 16, 28, 31, 32, 56, 62, 64, 112, 124, 217, 224, 248, 434, 448, 496, 868, 992, 1736, 1984, 3472, 6944, 13888
- Prime factorisation
- 2^6 × 7 × 31
- Digit sum
- 28
- Digital root
- 1
Representations
- Decimal
- 13888
- Scientific notation
- 1.389 × 10^4
Roman numerals
Roman numerals as modelled here goes up to 3,999.
Binary
1 1 0 1 1 0 0 1 0 0 0 0 0 0
1 × 8,192 + 1 × 4,096 + 0 × 2,048 + 1 × 1,024 + 1 × 512 + 0 × 256 + 0 × 128 + 1 × 64 + 0 × 32 + 0 × 16 + 0 × 8 + 0 × 4 + 0 × 2 + 0 × 1 = 13,888
Octal
3 3 1 0 0
3 × 4,096 + 3 × 512 + 1 × 64 + 0 × 8 + 0 × 1 = 13,888
Hexadecimal
3 6 4 0
3 × 4,096 + 6 × 256 + 4 × 16 + 0 × 1 = 13,888
Read as powers of two: 8,192 + 4,096 + 1,024 + 512 + 64 = 13,888.
In historical numeral systems
Egyptian
1 finger, 3 lotuses, 8 coils of rope, 8 hobbles, 8 strokes
1 × 10,000 + 3 × 1,000 + 8 × 100 + 8 × 10 + 8 × 1 = 13,888. The signs are simply repeated and added; where they sit on the line is a matter of layout, not value.
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
- Harshad (Niven) number
Related numbers & connections
Non-repudiation depends on digital signatures, and the two standards were developed to be used together.
View 14888 →Numbers Around Us
- appears alongside14888
why?
Strength 0.50, confidence "high".
Technology & computing
ISO/IEC 13888 specifies non-repudiation mechanisms providing evidence of origin, delivery and submission, using symmetric and asymmetric techniques and trusted third parties.
DocumentedTechnology & computingGeography: International — ISO member bodiesPeriod: 1997–
Common questions
Is 13,888 a prime number?
No, 13,888 is not prime.
What are the factors of 13,888?
The factors of 13,888 are 1, 2, 4, 7, 8, 14, 16, 28, 31, 32, 56, 62, 64, 112, 124, 217, 224, 248, 434, 448, 496, 868, 992, 1736, 1984, 3472, 6944, 13888.
About this page's data
Mathematical facts:computed directly from the number's value — nothing to source or verify externally.
Contextual records: 1 reviewer-confirmed record, sourced and reviewed before publication.
Last reviewed: 15 July 2026