Compare 129115 vs 129121
| Property | 129115 | 129121 |
|---|---|---|
| Type | composite number | prime |
| Unique factors | 4 | 1 |
| Total factors | 5 | 1 |
| Prime factorization | 51 × 72 × 171 × 311 | 1291211 |
| Prime factorization | 5 × 7 × 7 × 17 × 31 | 129121 |
| Divisors count | 24 | 2 |
| Divisors | 1, 5, 7, 17, 31, 35, 49, 85, 119, 155, 217, 245, 527, 595, 833, 1085, 1519, 2635, 3689, 4165, 7595, 18445, 25823, 129115 | 1, 129121 |
| Number of properties | 0 | 5 |
| Emirps | 2438th | |
| Primes | 12088th | |
| Pythagorean primes | 6013th | |
| Sexy primes (1st member) | 3000th | |
| Twin primes (2nd member) | 1508th | |
| Roman numberals | ||
| Base 2 | 111111000010110112 | 111111000011000012 |
| Base 3 | 201200100013 | 201200100213 |
| Base 4 | 1332011234 | 1332012014 |
| Base 5 | 131124305 | 131124415 |
| Base 6 | 24334316 | 24334416 |
| Base 7 | 10453007 | 10453067 |
| Base 8 | 3741338 | 3741418 |
| Base 9 | 2161019 | 2161079 |
| Base 10 | 12911510 | 12912110 |
| Base 11 | 8900811 | 8901311 |
| Base 12 | 6287712 | 6288112 |
| Base 13 | 469cc13 | 46a0513 |
| Base 14 | 350a714 | 350ad14 |
| Base 15 | 283ca15 | 283d115 |
| Base 16 | 1f85b16 | 1f86116 |