Compare 21397 vs 21409
Property | 21397 | 21409 |
---|---|---|
Type | prime | semiprime |
Unique factors | 1 | 2 |
Total factors | 1 | 2 |
Prime factorization | 213971 | 791 × 2711 |
Prime factorization | 21397 | 79 × 271 |
Divisors count | 2 | 4 |
Divisors | 1, 21397 | 1, 79, 271, 21409 |
Number of properties | 5 | 1 |
Cousin primes (1st member) | 365th | |
Isolated primes | 1677th | |
Primes | 2402nd | |
Pythagorean primes | 1191st | |
Semiprimes | 5422nd | |
Sexy primes (2nd member) | 729th | |
Roman numberals | ||
Base 2 | 1010011100101012 | 1010011101000012 |
Base 3 | 10021001113 | 10021002213 |
Base 4 | 110321114 | 110322014 |
Base 5 | 11410425 | 11411145 |
Base 6 | 2430216 | 2430416 |
Base 7 | 1162457 | 1162637 |
Base 8 | 516258 | 516418 |
Base 9 | 323149 | 323279 |
Base 10 | 2139710 | 2140910 |
Base 11 | 1509211 | 150a311 |
Base 12 | 1047112 | 1048112 |
Base 13 | 997c13 | 998b13 |
Base 14 | 7b2514 | 7b3314 |
Base 15 | 651715 | 652415 |
Base 16 | 539516 | 53a116 |