Compare 631 vs 642
| Property | 631 | 642 |
|---|---|---|
| Type | prime | composite number |
| Unique factors | 1 | 3 |
| Total factors | 1 | 3 |
| Prime factorization | 6311 | 21 × 31 × 1071 |
| Prime factorization | 631 | 2 × 3 × 107 |
| Divisors count | 2 | 8 |
| Divisors | 1, 631 | 1, 2, 3, 6, 107, 214, 321, 642 |
| Number of properties | 6 | 0 |
| Centered triangular primes | 7th | |
| Chen primes | 80th | |
| Cuban primes 1 | 10th | |
| Isolated primes | 60th | |
| Lucky primes | 32nd | |
| Primes | 115th | |
| Roman numberals | DCXXXI | DCXLII |
| Base 2 | 10011101112 | 10100000102 |
| Base 3 | 2121013 | 2122103 |
| Base 4 | 213134 | 220024 |
| Base 5 | 100115 | 100325 |
| Base 6 | 25316 | 25506 |
| Base 7 | 15617 | 16057 |
| Base 8 | 11678 | 12028 |
| Base 9 | 7719 | 7839 |
| Base 10 | 63110 | 64210 |
| Base 11 | 52411 | 53411 |
| Base 12 | 44712 | 45612 |
| Base 13 | 39713 | 3a513 |
| Base 14 | 33114 | 33c14 |
| Base 15 | 2c115 | 2cc15 |
| Base 16 | 27716 | 28216 |