Compare 641639 vs 641642
| Property | 641639 | 641642 |
|---|---|---|
| Type | prime | semiprime |
| Unique factors | 1 | 2 |
| Total factors | 1 | 2 |
| Prime factorization | 6416391 | 21 × 3208211 |
| Prime factorization | 641639 | 2 × 320821 |
| Divisors count | 2 | 4 |
| Divisors | 1, 641639 | 1, 2, 320821, 641642 |
| Number of properties | 4 | 1 |
| Additive primes | 20401st | |
| Isolated primes | 40910th | |
| Primes | 52195th | |
| Semiprimes | 137475th | |
| Sexy primes (2nd member) | 11308th | |
| Roman numberals | ||
| Base 2 | 100111001010011001112 | 100111001010011010102 |
| Base 3 | 10121210111023 | 10121210111123 |
| Base 4 | 21302212134 | 21302212224 |
| Base 5 | 1310130245 | 1310130325 |
| Base 6 | 214303156 | 214303226 |
| Base 7 | 53114457 | 53114517 |
| Base 8 | 23451478 | 23451528 |
| Base 9 | 11771429 | 11771459 |
| Base 10 | 64163910 | 64164210 |
| Base 11 | 3a908911 | 3a909111 |
| Base 12 | 26b39b12 | 26b3a212 |
| Base 13 | 19608b13 | 19609113 |
| Base 14 | 129b9514 | 129b9814 |
| Base 15 | ca1ae15 | ca1b215 |
| Base 16 | 9ca6716 | 9ca6a16 |