Compare 1861 vs 2281
| Property | 1861 | 2281 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 18611 | 22811 |
| Prime factorization | 1861 | 2281 |
| Divisors count | 2 | 2 |
| Divisors | 1, 1861 | 1, 2281 |
| Number of properties | 10 | 8 |
| Additive primes | 178th | |
| Centered square primes | 15th | |
| Chen primes | 207th | |
| Good primes | 58th | |
| Harmonic primes | 103rd | |
| Isolated primes | 173rd | 202nd |
| Long primes | 112th | |
| Lucky primes | 77th | |
| Primes | 284th | 339th |
| Pythagorean primes | 137th | 165th |
| Sexy primes (1st member) | 120th | 139th |
| Sexy prime quadrupletss (1st member) | 12th | |
| Sexy prime triplets (1st member) | 47th | 52nd |
| Roman numberals | MDCCCLXI | MMCCLXXXI |
| Base 2 | 111010001012 | 1000111010012 |
| Base 3 | 21122213 | 100101113 |
| Base 4 | 1310114 | 2032214 |
| Base 5 | 244215 | 331115 |
| Base 6 | 123416 | 143216 |
| Base 7 | 52667 | 64367 |
| Base 8 | 35058 | 43518 |
| Base 9 | 24879 | 31149 |
| Base 10 | 186110 | 228110 |
| Base 11 | 144211 | 179411 |
| Base 12 | 10b112 | 13a112 |
| Base 13 | b0213 | 106613 |
| Base 14 | 96d14 | b8d14 |
| Base 15 | 84115 | a2115 |
| Base 16 | 74516 | 8e916 |