Compare 42 vs 53
| Property | 42 | 53 |
|---|---|---|
| Type | composite number | prime |
| Unique factors | 3 | 1 |
| Total factors | 3 | 1 |
| Prime factorization | 21 × 31 × 71 | 531 |
| Prime factorization | 2 × 3 × 7 | 53 |
| Divisors count | 8 | 2 |
| Divisors | 1, 2, 3, 6, 7, 14, 21, 42 | 1, 53 |
| Number of properties | 0 | 18 |
| Chen primes | 15th | |
| Class 1+ primes | 10th | |
| Good primes | 7th | |
| Isolated primes | 5th | |
| Left-truncatable primes | 11th | |
| Pierpont primes of the 2nd kind | 10th | |
| Primes | 16th | |
| Pythagorean primes | 7th | |
| Restricted right-truncatable primes | 1st | |
| Right-truncatable primes | 9th | |
| Sexy primes (1st member) | 11th | |
| Sexy primes (2nd member) | 10th | |
| Sexy prime quadrupletss (3rd member) | 3rd | |
| Sexy prime triplets (2nd member) | 7th | |
| Sexy prime triplets (3rd member) | 6th | |
| Sophie germain primes | 8th | |
| Two-sided primes | 7th | |
| Ulam primes | 6th | |
| Roman numberals | XLII | LIII |
| Base 2 | 1010102 | 1101012 |
| Base 3 | 11203 | 12223 |
| Base 4 | 2224 | 3114 |
| Base 5 | 1325 | 2035 |
| Base 6 | 1106 | 1256 |
| Base 7 | 607 | 1047 |
| Base 8 | 528 | 658 |
| Base 9 | 469 | 589 |
| Base 10 | 4210 | 5310 |
| Base 11 | 3911 | 4911 |
| Base 12 | 3612 | 4512 |
| Base 13 | 3313 | 4113 |
| Base 14 | 3014 | 3b14 |
| Base 15 | 2c15 | 3815 |
| Base 16 | 2a16 | 3516 |