Compare 661 vs 1361
Property | 661 | 1361 |
---|---|---|
Type | prime | prime |
Unique factors | 1 | 1 |
Total factors | 1 | 1 |
Prime factorization | 6611 | 13611 |
Prime factorization | 661 | 1361 |
Divisors count | 2 | 2 |
Divisors | 1, 661 | 1, 1361 |
Number of properties | 5 | 9 |
Additive primes | 65th | 120th |
Centered decagonal primes | 8th | 12th |
Chen primes | 142nd | |
Isolated primes | 127th | |
Mills primes | 3rd | |
Primes | 121st | 218th |
Pythagorean primes | 57th | 107th |
Sexy primes (1st member) | 95th | |
Sexy prime triplets (1st member) | 36th | |
Twin primes (2nd member) | 30th | |
Roman numberals | DCLXI | MCCCLXI |
Base 2 | 10100101012 | 101010100012 |
Base 3 | 2201113 | 12121023 |
Base 4 | 221114 | 1111014 |
Base 5 | 101215 | 204215 |
Base 6 | 30216 | 101456 |
Base 7 | 16337 | 36537 |
Base 8 | 12258 | 25218 |
Base 9 | 8149 | 17729 |
Base 10 | 66110 | 136110 |
Base 11 | 55111 | 102811 |
Base 12 | 47112 | 95512 |
Base 13 | 3bb13 | 80913 |
Base 14 | 35314 | 6d314 |
Base 15 | 2e115 | 60b15 |
Base 16 | 29516 | 55116 |