Compare 1440 vs 1451
| Property | 1440 | 1451 |
|---|---|---|
| Type | composite number | prime |
| Unique factors | 3 | 1 |
| Total factors | 8 | 1 |
| Prime factorization | 25 × 32 × 51 | 14511 |
| Prime factorization | 2 × 2 × 2 × 2 × 2 × 3 × 3 × 5 | 1451 |
| Divisors count | 36 | 2 |
| Divisors | 1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 32, 36, 40, 45, 48, 60, 72, 80, 90, 96, 120, 144, 160, 180, 240, 288, 360, 480, 720, 1440 | 1, 1451 |
| Number of properties | 0 | 7 |
| Additive primes | 125th | |
| Chen primes | 149th | |
| Cousin primes (2nd member) | 51st | |
| Primes | 230th | |
| Prime triplets (2nd member) | 38th | |
| Sophie germain primes | 48th | |
| Twin primes (1st member) | 48th | |
| Roman numberals | MCDXL | MCDLI |
| Base 2 | 101101000002 | 101101010112 |
| Base 3 | 12221003 | 12222023 |
| Base 4 | 1122004 | 1122234 |
| Base 5 | 212305 | 213015 |
| Base 6 | 104006 | 104156 |
| Base 7 | 41257 | 41427 |
| Base 8 | 26408 | 26538 |
| Base 9 | 18709 | 18829 |
| Base 10 | 144010 | 145110 |
| Base 11 | 109a11 | 10aa11 |
| Base 12 | a0012 | a0b12 |
| Base 13 | 86a13 | 87813 |
| Base 14 | 74c14 | 75914 |
| Base 15 | 66015 | 66b15 |
| Base 16 | 5a016 | 5ab16 |