Compare 21151 vs 21157
Property | 21151 | 21157 |
---|---|---|
Type | semiprime | prime |
Unique factors | 2 | 1 |
Total factors | 2 | 1 |
Prime factorization | 131 × 16271 | 211571 |
Prime factorization | 13 × 1627 | 21157 |
Divisors count | 4 | 2 |
Divisors | 1, 13, 1627, 21151 | 1, 21157 |
Number of properties | 1 | 5 |
Isolated primes | 1659th | |
Primes | 2378th | |
Pythagorean primes | 1181st | |
Semiprimes | 5362nd | |
Sexy primes (1st member) | 720th | |
Sexy prime triplets (1st member) | 197th | |
Roman numberals | ||
Base 2 | 1010010100111112 | 1010010101001012 |
Base 3 | 10020001013 | 10020001213 |
Base 4 | 110221334 | 110222114 |
Base 5 | 11341015 | 11341125 |
Base 6 | 2415316 | 2415416 |
Base 7 | 1154447 | 1154537 |
Base 8 | 512378 | 512458 |
Base 9 | 320119 | 320179 |
Base 10 | 2115110 | 2115710 |
Base 11 | 1498911 | 1499411 |
Base 12 | 102a712 | 102b112 |
Base 13 | 982013 | 982613 |
Base 14 | 79cb14 | 79d314 |
Base 15 | 640115 | 640715 |
Base 16 | 529f16 | 52a516 |