Compare 66 vs 67
Property | 66 | 67 |
---|---|---|
Type | composite number | prime |
Unique factors | 3 | 1 |
Total factors | 3 | 1 |
Prime factorization | 21 × 31 × 111 | 671 |
Prime factorization | 2 × 3 × 11 | 67 |
Divisors count | 8 | 2 |
Divisors | 1, 2, 3, 6, 11, 22, 33, 66 | 1, 67 |
Number of properties | 0 | 17 |
Additive primes | 12th | |
Chen primes | 17th | |
Cousin primes (1st member) | 7th | |
Good primes | 9th | |
Harmonic primes | 6th | |
Isolated primes | 6th | |
Left-truncatable primes | 12th | |
Lucky primes | 7th | |
Primes | 19th | |
Prime triplets (1st member) | 8th | |
Sexy primes (1st member) | 13th | |
Sexy primes (2nd member) | 12th | |
Sexy prime quadrupletss (2nd member) | 4th | |
Sexy prime triplets (1st member) | 9th | |
Sexy prime triplets (2nd member) | 8th | |
Solinas primes | 16th | |
Super primes | 8th | |
Roman numberals | LXVI | LXVII |
Base 2 | 10000102 | 10000112 |
Base 3 | 21103 | 21113 |
Base 4 | 10024 | 10034 |
Base 5 | 2315 | 2325 |
Base 6 | 1506 | 1516 |
Base 7 | 1237 | 1247 |
Base 8 | 1028 | 1038 |
Base 9 | 739 | 749 |
Base 10 | 6610 | 6710 |
Base 11 | 6011 | 6111 |
Base 12 | 5612 | 5712 |
Base 13 | 5113 | 5213 |
Base 14 | 4a14 | 4b14 |
Base 15 | 4615 | 4715 |
Base 16 | 4216 | 4316 |