136,199
136199 Eris is the dwarf planet that triggered Pluto's reclassification.
- Odd
- Composite
Where 136,199 fits
Why 136,199 is special
It is more massive than Pluto, so the choice was to accept a tenth planet or redefine the word, and the IAU redefined the word.
Factors & digit properties
- Divisors (4)
- 1, 7, 19457, 136199
- Prime factorisation
- 7 × 19457
- Digit sum
- 29
- Digital root
- 2
Representations
- Decimal
- 136199
- Scientific notation
- 1.362 × 10^5
Roman numerals
Roman numerals as modelled here goes up to 3,999.
Binary
1 0 0 0 0 1 0 1 0 0 0 0 0 0 0 1 1 1
1 × 131,072 + 0 × 65,536 + 0 × 32,768 + 0 × 16,384 + 0 × 8,192 + 1 × 4,096 + 0 × 2,048 + 1 × 1,024 + 0 × 512 + 0 × 256 + 0 × 128 + 0 × 64 + 0 × 32 + 0 × 16 + 0 × 8 + 1 × 4 + 1 × 2 + 1 × 1 = 136,199
Octal
4 1 2 0 0 7
4 × 32,768 + 1 × 4,096 + 2 × 512 + 0 × 64 + 0 × 8 + 7 × 1 = 136,199
Hexadecimal
2 1 4 0 7
2 × 65,536 + 1 × 4,096 + 4 × 256 + 0 × 16 + 7 × 1 = 136,199
Read as powers of two: 131,072 + 4,096 + 1,024 + 4 + 2 + 1 = 136,199.
In historical numeral systems
Egyptian
1 tadpole, 3 fingers, 6 lotuses, 1 coil of rope, 9 hobbles, 9 strokes
1 × 100,000 + 3 × 10,000 + 6 × 1,000 + 1 × 100 + 9 × 10 + 9 × 1 = 136,199. 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
- Semiprime
Related numbers & connections
Both are large trans-Neptunian objects discovered in 2005 by the same survey.
View 136472 →Eris proved more massive than Pluto, and the choice between a tenth planet and a new definition produced Pluto's minor planet number.
View 134340 →Science
136199 Eris was discovered in 2005 and found to exceed Pluto in mass. Its discovery precipitated the 2006 IAU definition of a planet.
DocumentedSciencePeriod: 2005–
Common questions
Is 136,199 a prime number?
No, 136,199 is not prime.
What are the factors of 136,199?
The factors of 136,199 are 1, 7, 19457, 136199.
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