Compare 660001 vs 660007
| Property | 660001 | 660007 |
|---|---|---|
| Type | prime | semiprime |
| Unique factors | 1 | 2 |
| Total factors | 1 | 2 |
| Prime factorization | 6600011 | 431 × 153491 |
| Prime factorization | 660001 | 43 × 15349 |
| Divisors count | 2 | 4 |
| Divisors | 1, 660001 | 1, 43, 15349, 660007 |
| Number of properties | 4 | 1 |
| Additive primes | 20912th | |
| Lucky primes | 6141st | |
| Primes | 53565th | |
| Semiprimes | 141247th | |
| Twin primes (2nd member) | 5777th | |
| Roman numberals | ||
| Base 2 | 101000010010001000012 | 101000010010001001112 |
| Base 3 | 10201121001113 | 10201121002013 |
| Base 4 | 22010202014 | 22010202134 |
| Base 5 | 1321100015 | 1321100125 |
| Base 6 | 220513216 | 220513316 |
| Base 7 | 54161267 | 54161357 |
| Base 8 | 24110418 | 24110478 |
| Base 9 | 12153149 | 12153219 |
| Base 10 | 66000110 | 66000710 |
| Base 11 | 41096111 | 41096711 |
| Base 12 | 279b4112 | 279b4712 |
| Base 13 | 1a154413 | 1a154a13 |
| Base 14 | 13274d14 | 13275514 |
| Base 15 | d085115 | d085715 |
| Base 16 | a122116 | a122716 |