1,114,111
1,114,111 is the highest Unicode code point, written U+10FFFF.
- Odd
- Prime
Where 1,114,111 fits
Why 1,114,111 is special
The ceiling is not a power of two and not arbitrary: it is what UTF-16 surrogate pairs can address. Unicode was capped at this value in 2003 so that all three encoding forms could represent the same set, which means UTF-8 and UTF-32 are both limited by a constraint that belongs to neither.
1,114,111 is part of
Factors & digit properties
- Divisors (2)
- 1, 1114111
- Prime factorisation
- 1114111
- Digit sum
- 10
- Digital root
- 1
Representations
- Decimal
- 1114111
- Scientific notation
- 1.114 × 10^6
Roman numerals
Roman numerals as modelled here goes up to 3,999.
Binary
1 0 0 0 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
1 × 1,048,576 + 0 × 524,288 + 0 × 262,144 + 0 × 131,072 + 0 × 65,536 + 1 × 32,768 + 1 × 16,384 + 1 × 8,192 + 1 × 4,096 + 1 × 2,048 + 1 × 1,024 + 1 × 512 + 1 × 256 + 1 × 128 + 1 × 64 + 1 × 32 + 1 × 16 + 1 × 8 + 1 × 4 + 1 × 2 + 1 × 1 = 1,114,111
Octal
4 1 7 7 7 7 7
4 × 262,144 + 1 × 32,768 + 7 × 4,096 + 7 × 512 + 7 × 64 + 7 × 8 + 7 × 1 = 1,114,111
Hexadecimal
1 0 f f f f
1 × 1,048,576 + 0 × 65,536 + f × 4,096 + f × 256 + f × 16 + f × 1 = 1,114,111
In historical numeral systems
Egyptian
1 Heh figure, 1 tadpole, 1 finger, 4 lotuses, 1 coil of rope, 1 hobble, 1 stroke
1 × 1,000,000 + 1 × 100,000 + 1 × 10,000 + 4 × 1,000 + 1 × 100 + 1 × 10 + 1 × 1 = 1,114,111. 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
- Palindromic number
- Deficient number
Technology & computing
The highest Unicode code point is 1,114,111 (worldwide, the Unicode Standard). Written U+10FFFF. The ceiling is what UTF-16 surrogate pairs can address, so UTF-8 and UTF-32 are both limited by a constraint belonging to neither.
DocumentedTechnology & computingGeography: worldwide, the Unicode Standard
Common questions
Is 1,114,111 a prime number?
Yes, 1,114,111 is prime — it has exactly two positive divisors: 1 and itself.
What are the factors of 1,114,111?
The factors of 1,114,111 are 1, 1114111.
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