Compare 201661 vs 202121
| Property | 201661 | 202121 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 2016611 | 2021211 |
| Prime factorization | 201661 | 202121 |
| Divisors count | 2 | 2 |
| Divisors | 1, 201661 | 1, 202121 |
| Number of properties | 5 | 6 |
| Chen primes | 7591st | |
| Harmonic primes | 6814th | |
| Isolated primes | 13774th | 13812th |
| Primes | 18113th | 18159th |
| Pythagorean primes | 9041st | 9066th |
| Sexy primes (1st member) | 4322nd | 4332nd |
| Sexy prime triplets (1st member) | 869th | |
| Roman numberals | ||
| Base 2 | 1100010011101111012 | 1100010101100010012 |
| Base 3 | 1010201212213 | 1010210202223 |
| Base 4 | 3010323314 | 3011120214 |
| Base 5 | 224231215 | 224314415 |
| Base 6 | 41533416 | 41554256 |
| Base 7 | 14666357 | 15011637 |
| Base 8 | 6116758 | 6126118 |
| Base 9 | 3365579 | 3372289 |
| Base 10 | 20166110 | 20212110 |
| Base 11 | 12856911 | 12894711 |
| Base 12 | 9885112 | 98b7512 |
| Base 13 | 70a3513 | 70cca13 |
| Base 14 | 536c514 | 5393314 |
| Base 15 | 3eb4115 | 3ed4b15 |
| Base 16 | 313bd16 | 3158916 |