Compare 641981 vs 641985
| Property | 641981 | 641985 |
|---|---|---|
| Type | prime | composite number |
| Unique factors | 1 | 4 |
| Total factors | 1 | 4 |
| Prime factorization | 6419811 | 31 × 51 × 1271 × 3371 |
| Prime factorization | 641981 | 3 × 5 × 127 × 337 |
| Divisors count | 2 | 16 |
| Divisors | 1, 641981 | 1, 3, 5, 15, 127, 337, 381, 635, 1011, 1685, 1905, 5055, 42799, 128397, 213995, 641985 |
| Number of properties | 4 | 0 |
| Additive primes | 20411th | |
| Chen primes | 20429th | |
| Isolated primes | 40931st | |
| Primes | 52222nd | |
| Roman numberals | ||
| Base 2 | 100111001011101111012 | 100111001011110000012 |
| Base 3 | 10121211220023 | 10121211220203 |
| Base 4 | 21302323314 | 21302330014 |
| Base 5 | 1310204115 | 1310204205 |
| Base 6 | 214320456 | 214320536 |
| Base 7 | 53124447 | 53124517 |
| Base 8 | 23456758 | 23457018 |
| Base 9 | 11775629 | 11775669 |
| Base 10 | 64198110 | 64198510 |
| Base 11 | 3a936a11 | 3a937311 |
| Base 12 | 26b62512 | 26b62912 |
| Base 13 | 19629213 | 19629613 |
| Base 14 | 129d5b14 | 129d6114 |
| Base 15 | ca33b15 | ca34015 |
| Base 16 | 9cbbd16 | 9cbc116 |