Compare 157989 vs 157991
| Property | 157989 | 157991 |
|---|---|---|
| Type | composite number | prime |
| Unique factors | 3 | 1 |
| Total factors | 3 | 1 |
| Prime factorization | 31 × 131 × 40511 | 1579911 |
| Prime factorization | 3 × 13 × 4051 | 157991 |
| Divisors count | 8 | 2 |
| Divisors | 1, 3, 13, 39, 4051, 12153, 52663, 157989 | 1, 157991 |
| Number of properties | 0 | 4 |
| Emirps | 3166th | |
| Harmonic primes | 5442nd | |
| Isolated primes | 10951st | |
| Primes | 14520th | |
| Roman numberals | ||
| Base 2 | 1001101001001001012 | 1001101001001001112 |
| Base 3 | 220002011103 | 220002011123 |
| Base 4 | 2122102114 | 2122102134 |
| Base 5 | 200234245 | 200234315 |
| Base 6 | 32152336 | 32152356 |
| Base 7 | 12254167 | 12254217 |
| Base 8 | 4644458 | 4644478 |
| Base 9 | 2606439 | 2606459 |
| Base 10 | 15798910 | 15799110 |
| Base 11 | a877711 | a877911 |
| Base 12 | 7751912 | 7751b12 |
| Base 13 | 56bb013 | 56bb213 |
| Base 14 | 4180d14 | 4181114 |
| Base 15 | 31c2915 | 31c2b15 |
| Base 16 | 2692516 | 2692716 |