Compare 31138 vs 31139
| Property | 31138 | 31139 |
|---|---|---|
| Type | semiprime | prime |
| Unique factors | 2 | 1 |
| Total factors | 2 | 1 |
| Prime factorization | 21 × 155691 | 311391 |
| Prime factorization | 2 × 15569 | 31139 |
| Divisors count | 4 | 2 |
| Divisors | 1, 2, 15569, 31138 | 1, 31139 |
| Number of properties | 1 | 7 |
| Additive primes | 1515th | |
| Emirps | 669th | |
| Good primes | 333rd | |
| Isolated primes | 2394th | |
| Long primes | 1271st | |
| Primes | 3353rd | |
| Safe primes | 272nd | |
| Semiprimes | 7738th | |
| Roman numberals | ||
| Base 2 | 1111001101000102 | 1111001101000112 |
| Base 3 | 11202010213 | 11202010223 |
| Base 4 | 132122024 | 132122034 |
| Base 5 | 14440235 | 14440245 |
| Base 6 | 4000546 | 4000556 |
| Base 7 | 1565327 | 1565337 |
| Base 8 | 746428 | 746438 |
| Base 9 | 466379 | 466389 |
| Base 10 | 3113810 | 3113910 |
| Base 11 | 2143811 | 2143911 |
| Base 12 | 1602a12 | 1602b12 |
| Base 13 | 1123313 | 1123413 |
| Base 14 | b4c214 | b4c314 |
| Base 15 | 935d15 | 935e15 |
| Base 16 | 79a216 | 79a316 |