Compare 1221 vs 1223
Property | 1221 | 1223 |
---|---|---|
Type | composite number | prime |
Unique factors | 3 | 1 |
Total factors | 3 | 1 |
Prime factorization | 31 × 111 × 371 | 12231 |
Prime factorization | 3 × 11 × 37 | 1223 |
Divisors count | 8 | 2 |
Divisors | 1, 3, 11, 33, 37, 111, 407, 1221 | 1, 1223 |
Number of properties | 0 | 10 |
Emirps | 54th | |
Harmonic primes | 70th | |
Isolated primes | 119th | |
Left-truncatable primes | 55th | |
Long primes | 77th | |
Primes | 200th | |
Sexy primes (1st member) | 87th | |
Sexy primes (2nd member) | 86th | |
Sexy prime triplets (2nd member) | 33rd | |
Sophie germain primes | 43rd | |
Roman numberals | MCCXXI | MCCXXIII |
Base 2 | 100110001012 | 100110001112 |
Base 3 | 12000203 | 12000223 |
Base 4 | 1030114 | 1030134 |
Base 5 | 143415 | 143435 |
Base 6 | 53536 | 53556 |
Base 7 | 33637 | 33657 |
Base 8 | 23058 | 23078 |
Base 9 | 16069 | 16089 |
Base 10 | 122110 | 122310 |
Base 11 | a1011 | a1211 |
Base 12 | 85912 | 85b12 |
Base 13 | 72c13 | 73113 |
Base 14 | 63314 | 63514 |
Base 15 | 56615 | 56815 |
Base 16 | 4c516 | 4c716 |