Compare 1541 vs 1549
| Property | 1541 | 1549 |
|---|---|---|
| Type | semiprime | prime |
| Unique factors | 2 | 1 |
| Total factors | 2 | 1 |
| Prime factorization | 231 × 671 | 15491 |
| Prime factorization | 23 × 67 | 1549 |
| Divisors count | 4 | 2 |
| Divisors | 1, 23, 67, 1541 | 1, 1549 |
| Number of properties | 1 | 7 |
| Additive primes | 133rd | |
| Cousin primes (1st member) | 54th | |
| Isolated primes | 145th | |
| Long primes | 93rd | |
| Primes | 244th | |
| Pythagorean primes | 117th | |
| Semiprimes | 450th | |
| Sexy primes (2nd member) | 106th | |
| Roman numberals | MDXLI | MDXLIX |
| Base 2 | 110000001012 | 110000011012 |
| Base 3 | 20100023 | 20101013 |
| Base 4 | 1200114 | 1200314 |
| Base 5 | 221315 | 221445 |
| Base 6 | 110456 | 111016 |
| Base 7 | 43317 | 43427 |
| Base 8 | 30058 | 30158 |
| Base 9 | 21029 | 21119 |
| Base 10 | 154110 | 154910 |
| Base 11 | 118111 | 118911 |
| Base 12 | a8512 | a9112 |
| Base 13 | 91713 | 92213 |
| Base 14 | 7c114 | 7c914 |
| Base 15 | 6cb15 | 6d415 |
| Base 16 | 60516 | 60d16 |