Compare 1381 vs 1451
| Property | 1381 | 1451 | 
|---|---|---|
| Type | prime | prime | 
| Unique factors | 1 | 1 | 
| Total factors | 1 | 1 | 
| Prime factorization | 13811 | 14511 | 
| Prime factorization | 1381 | 1451 | 
| Divisors count | 2 | 2 | 
| Divisors | 1, 1381 | 1, 1451 | 
| Number of properties | 7 | 7 | 
| Additive primes | 122nd | 125th | 
| Chen primes | 144th | 149th | 
| Cousin primes (2nd member) | 51st | |
| Emirps | 64th | |
| Isolated primes | 130th | |
| Long primes | 86th | |
| Primes | 221st | 230th | 
| Prime triplets (2nd member) | 38th | |
| Pythagorean primes | 109th | |
| Sophie germain primes | 48th | |
| Twin primes (1st member) | 48th | |
| Roman numberals | MCCCLXXXI | MCDLI | 
| Base 2 | 101011001012 | 101101010112 | 
| Base 3 | 12200113 | 12222023 | 
| Base 4 | 1112114 | 1122234 | 
| Base 5 | 210115 | 213015 | 
| Base 6 | 102216 | 104156 | 
| Base 7 | 40127 | 41427 | 
| Base 8 | 25458 | 26538 | 
| Base 9 | 18049 | 18829 | 
| Base 10 | 138110 | 145110 | 
| Base 11 | 104611 | 10aa11 | 
| Base 12 | 97112 | a0b12 | 
| Base 13 | 82313 | 87813 | 
| Base 14 | 70914 | 75914 | 
| Base 15 | 62115 | 66b15 | 
| Base 16 | 56516 | 5ab16 |