Compare 21491 vs 21494
Property | 21491 | 21494 |
---|---|---|
Type | prime | composite number |
Unique factors | 1 | 3 |
Total factors | 1 | 3 |
Prime factorization | 214911 | 21 × 111 × 9771 |
Prime factorization | 21491 | 2 × 11 × 977 |
Divisors count | 2 | 8 |
Divisors | 1, 21491 | 1, 2, 11, 22, 977, 1954, 10747, 21494 |
Number of properties | 9 | 0 |
Additive primes | 1116th | |
Chen primes | 1183rd | |
Cousin primes (2nd member) | 366th | |
Good primes | 272nd | |
Happy primes | 401st | |
Harmonic primes | 885th | |
Primes | 2410th | |
Prime triplets (2nd member) | 182nd | |
Twin primes (1st member) | 364th | |
Roman numberals | ||
Base 2 | 1010011111100112 | 1010011111101102 |
Base 3 | 10021102223 | 10021110023 |
Base 4 | 110333034 | 110333124 |
Base 5 | 11414315 | 11414345 |
Base 6 | 2432556 | 2433026 |
Base 7 | 1164417 | 1164447 |
Base 8 | 517638 | 517668 |
Base 9 | 324289 | 324329 |
Base 10 | 2149110 | 2149410 |
Base 11 | 1516811 | 1517011 |
Base 12 | 1052b12 | 1053212 |
Base 13 | 9a2213 | 9a2513 |
Base 14 | 7b9114 | 7b9414 |
Base 15 | 657b15 | 657e15 |
Base 16 | 53f316 | 53f616 |