Compare 21953 vs 21961
| Property | 21953 | 21961 |
|---|---|---|
| Type | semiprime | prime |
| Unique factors | 2 | 1 |
| Total factors | 2 | 1 |
| Prime factorization | 291 × 7571 | 219611 |
| Prime factorization | 29 × 757 | 21961 |
| Divisors count | 4 | 2 |
| Divisors | 1, 29, 757, 21953 | 1, 21961 |
| Number of properties | 1 | 5 |
| Additive primes | 1139th | |
| Chen primes | 1206th | |
| Isolated primes | 1718th | |
| Primes | 2461st | |
| Pythagorean primes | 1221st | |
| Semiprimes | 5541st | |
| Roman numberals | ||
| Base 2 | 1010101110000012 | 1010101110010012 |
| Base 3 | 10100100023 | 10100101013 |
| Base 4 | 111130014 | 111130214 |
| Base 5 | 12003035 | 12003215 |
| Base 6 | 2453456 | 2454016 |
| Base 7 | 1210017 | 1210127 |
| Base 8 | 527018 | 527118 |
| Base 9 | 331029 | 331119 |
| Base 10 | 2195310 | 2196110 |
| Base 11 | 1554811 | 1555511 |
| Base 12 | 1085512 | 1086112 |
| Base 13 | 9cb913 | 9cc413 |
| Base 14 | 800114 | 800914 |
| Base 15 | 678815 | 679115 |
| Base 16 | 55c116 | 55c916 |