113
Nihonium is element 113, the first element named in Asia.
- Odd
- Prime
Where 113 fits
Why 113 is special
A Japanese team at RIKEN made three atoms over nine years and won the naming right against a Russian-American claim. Nihon is one of the Japanese names for Japan, making it the first element named by an Asian country.
113 is part of
Factors & digit properties
- Divisors (2)
- 1, 113
- Prime factorisation
- 113
- Digit sum
- 5
- Digital root
- 5
Representations
- Decimal
- 113
- Scientific notation
- 1.130 × 10^2
Roman numerals
C X I I I
Binary
1 1 1 0 0 0 1
1 × 64 + 1 × 32 + 1 × 16 + 0 × 8 + 0 × 4 + 0 × 2 + 1 × 1 = 113
Octal
1 6 1
1 × 64 + 6 × 8 + 1 × 1 = 113
Hexadecimal
7 1
7 × 16 + 1 × 1 = 113
Read as powers of two: 64 + 32 + 16 + 1 = 113.
In historical numeral systems
Egyptian
1 coil of rope, 1 hobble, 3 strokes
1 × 100 + 1 × 10 + 3 × 1 = 113. The signs are simply repeated and added; where they sit on the line is a matter of layout, not value.
Babylonian
1 vertical wedge (sixties place), 5 corner wedges + 3 vertical wedges (units place)
1 × 60 + 53 = 113. Places are separated by a space on the tablet, with the higher place written first.
Greek (Ionic)
rho, then iota, then gamma, marked as a numeral
rho-iota-gamma + keraia
rho + iota + gamma written in descending order and added — the letters carry their values wherever they stand, so this is addition, not place value.
Hebrew numerals
qof, then yod, then gimel
qof-yod-gimel
qof (100) + yod (10) + gimel (3) = 113, written in descending order.
Maya
1 bar (upper, twenties place) over 2 bars + 3 dots (lower, units place)
5 × 20 + 13 = 113. 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
- Deficient number
- Sophie Germain prime
Related numbers & connections
Nihonium and moscovium were confirmed together in 2016, the products of separate Japanese and Russian-American programmes running in parallel for a decade.
View 115 →Numbers Around Us
- appears alongside115
why?
Strength 0.50, confidence "high".
Science
RIKEN's team detected three atoms of element 113 across nine years of running an accelerator, and that was enough to secure the naming right over a competing claim. Nihonium is the first element named by a country in Asia.
DocumentedScienceGeography: Japan
Common questions
Is 113 a prime number?
Yes, 113 is prime — it has exactly two positive divisors: 1 and itself.
What are the factors of 113?
The factors of 113 are 1, 113.
What is 113 in Roman numerals?
113 in Roman numerals is CXIII.
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