42 in Medefaidrin
× 20× 1
2 × 20 + 2; documented in the encoding proposal.
MODERN · BASE 20
Medefaidrin
Twenty digits used in Medefaidrin, a language and script developed in Nigeria.
Convert numbers- Place
- Cross River, Nigeria
- Period / variant
- 1930s onward
EXAMPLES
42 · Base 20
2 × 20 + 2; documented in the encoding proposal.
Worked example
Write 42 in Medefaidrin
Read from left to right. The rightmost place counts ones; each place to its left is worth 20 times as much.
42 ÷ 20 = 2, remainder 2. Start with 2 in the 20s place, then write the remainder in the lower places.
- × 20
This sign is the digit 2. In the 20s place, it contributes 2 × 20 = 40.
- × 1
This sign is the digit 2. At the ones place, it contributes 2.
Check
2 × 20 + 2 = 42
Sources and notation notes
Meet the symbols
Each tile shows one digit and its value. These are the 20 digits used by this display. Combine them using the rules below.
- 0
- 1
- 2
- 3
- 4
- 5
- 6
- 7
- 8
- 9
- 10
- 11
- 12
- 13
- 14
- 15
- 16
- 17
- 18
- 19
How the symbols fit together
Use groups of twenty instead of groups of ten. Each digit has its own sign, from zero through nineteen.
- Read the positions from the right: ones, twenties, then four hundreds. Moving one position left makes its value twenty times larger.
- For 42, the left sign is 2 in the twenties position. Two twenties make 40.
- The right sign is 2 in the ones position. Add 40 + 2 = 42.
- For 400, use 1 in the four-hundreds position, then two zero signs. The zeros keep the empty twenties and ones positions visible.
100 in Medefaidrin
× 20× 1
5 × 20 + 0; documented in the encoding proposal.
400 in Medefaidrin
× 400× 20× 1
1 × 20² + 0 × 20 + 0; documented in the encoding proposal.
Ordinary digit shapes are used here. Simplified forms of one, two, and three also occur in compound numbers, but community examples establish that they are optional. The 100-digit input limit belongs to this app.
History
Medefaidrin belongs to the Oberi Okaime community in southeastern Nigeria. Its script developed alongside a spiritual language during the early twentieth century. The encoding proposal includes handwritten numerals supplied by Reverend Richmael Ekit in 2016.
How to read it
Use groups of twenty instead of groups of ten. Each digit has its own sign, from zero through nineteen.
- Read the positions from the right: ones, twenties, then four hundreds. Moving one position left makes its value twenty times larger.
- For 42, the left sign is 2 in the twenties position. Two twenties make 40.
- The right sign is 2 in the ones position. Add 40 + 2 = 42.
- For 400, use 1 in the four-hundreds position, then two zero signs. The zeros keep the empty twenties and ones positions visible.
Limits
Ordinary digit shapes are used here. Simplified forms of one, two, and three also occur in compound numbers, but community examples establish that they are optional. The 100-digit input limit belongs to this app.
Compare systems