Compare 81 vs 83
Property | 81 | 83 |
---|---|---|
Type | composite number | prime |
Unique factors | 1 | 1 |
Total factors | 4 | 1 |
Prime factorization | 34 | 831 |
Prime factorization | 3 × 3 × 3 × 3 | 83 |
Divisors count | 5 | 2 |
Divisors | 1, 3, 9, 27, 81 | 1, 83 |
Number of properties | 0 | 10 |
Additive primes | 13th | |
Chen primes | 19th | |
Cousin primes (2nd member) | 8th | |
Isolated primes | 8th | |
Left-truncatable primes | 14th | |
Primes | 23rd | |
Safe primes | 7th | |
Sexy primes (1st member) | 15th | |
Sophie germain primes | 9th | |
Super primes | 9th | |
Roman numberals | LXXXI | LXXXIII |
Base 2 | 10100012 | 10100112 |
Base 3 | 100003 | 100023 |
Base 4 | 11014 | 11034 |
Base 5 | 3115 | 3135 |
Base 6 | 2136 | 2156 |
Base 7 | 1447 | 1467 |
Base 8 | 1218 | 1238 |
Base 9 | 1009 | 1029 |
Base 10 | 8110 | 8310 |
Base 11 | 7411 | 7611 |
Base 12 | 6912 | 6b12 |
Base 13 | 6313 | 6513 |
Base 14 | 5b14 | 5d14 |
Base 15 | 5615 | 5815 |
Base 16 | 5116 | 5316 |