Compare 21280 vs 21283
| Property | 21280 | 21283 |
|---|---|---|
| Type | composite number | prime |
| Unique factors | 4 | 1 |
| Total factors | 8 | 1 |
| Prime factorization | 25 × 51 × 71 × 191 | 212831 |
| Prime factorization | 2 × 2 × 2 × 2 × 2 × 5 × 7 × 19 | 21283 |
| Divisors count | 48 | 2 |
| Divisors | 1, 2, 4, 5, 7, 8, 10, 14, 16, 19, 20, 28, 32, 35, 38, 40, 56, 70, 76, 80, 95, 112, 133, 140, 152, 160, 190, 224, 266, 280, 304, 380, 532, 560, 608, 665, 760, 1064, 1120, 1330, 1520, 2128, 2660, 3040, 4256, 5320, 10640, 21280 | 1, 21283 |
| Number of properties | 0 | 5 |
| Happy primes | 395th | |
| Isolated primes | 1670th | |
| Left-truncatable primes | 170th | |
| Primes | 2391st | |
| Sexy primes (2nd member) | 724th | |
| Roman numberals | ||
| Base 2 | 1010011001000002 | 1010011001000112 |
| Base 3 | 10020120113 | 10020120213 |
| Base 4 | 110302004 | 110302034 |
| Base 5 | 11401105 | 11401135 |
| Base 6 | 2423046 | 2423116 |
| Base 7 | 1160207 | 1160237 |
| Base 8 | 514408 | 514438 |
| Base 9 | 321649 | 321679 |
| Base 10 | 2128010 | 2128310 |
| Base 11 | 14a9611 | 14a9911 |
| Base 12 | 1039412 | 1039712 |
| Base 13 | 98bc13 | 98c213 |
| Base 14 | 7a8014 | 7a8314 |
| Base 15 | 648a15 | 648d15 |
| Base 16 | 532016 | 532316 |