8188
Cho Oyu is 8,188 metres high and is considered the most accessible eight-thousander.
- Even
- Composite
Where 8188 fits
Why 8188 is special
Its moderate slopes and short approach make it the usual first choice for climbers attempting the fourteen. Accessibility is relative: it has still killed dozens.
8188 is part of
Factors & digit properties
- Divisors (12)
- 1, 2, 4, 23, 46, 89, 92, 178, 356, 2047, 4094, 8188
- Prime factorisation
- 2^2 × 23 × 89
- Digit sum
- 25
- Digital root
- 7
Representations
- Decimal
- 8188
- Scientific notation
- 8.188 × 10^3
Roman numerals
Roman numerals as modelled here goes up to 3,999.
Binary
1 1 1 1 1 1 1 1 1 1 1 0 0
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 + 0 × 2 + 0 × 1 = 8,188
Octal
1 7 7 7 4
1 × 4,096 + 7 × 512 + 7 × 64 + 7 × 8 + 4 × 1 = 8,188
Hexadecimal
1 f f c
1 × 4,096 + f × 256 + f × 16 + c × 1 = 8,188
Read as powers of two: 4,096 + 2,048 + 1,024 + 512 + 256 + 128 + 64 + 32 + 16 + 8 + 4 = 8,188.
In historical numeral systems
Egyptian
8 lotuses, 1 coil of rope, 8 hobbles, 8 strokes
8 × 1,000 + 1 × 100 + 8 × 10 + 8 × 1 = 8,188. 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
- Deficient number
- Happy number
Related numbers & connections
Cho Oyu is the usual first eight-thousander and Annapurna has the highest fatality rate of the fourteen. Height is a poor predictor of danger.
View 8091 →Other connections
- contrasts with8091
why?
Strength 0.50, confidence "high".
Geography
Cho Oyu is attempted first by most climbers pursuing all fourteen, because its slopes are moderate and the approach short. Its fatality rate is among the lowest of the group and is not zero.
DocumentedGeographyGeography: Nepal and China
Common questions
Is 8188 a prime number?
No, 8188 is not prime.
What are the factors of 8188?
The factors of 8188 are 1, 2, 4, 23, 46, 89, 92, 178, 356, 2047, 4094, 8188.
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