Compare 280 vs 281
Property | 280 | 281 |
---|---|---|
Type | composite number | prime |
Unique factors | 3 | 1 |
Total factors | 5 | 1 |
Prime factorization | 23 × 51 × 71 | 2811 |
Prime factorization | 2 × 2 × 2 × 5 × 7 | 281 |
Divisors count | 16 | 2 |
Divisors | 1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280 | 1, 281 |
Number of properties | 0 | 10 |
Additive primes | 34th | |
Centered decagonal primes | 7th | |
Chen primes | 45th | |
Cousin primes (2nd member) | 17th | |
Harmonic primes | 23rd | |
Primes | 60th | |
Prime triplets (2nd member) | 17th | |
Pythagorean primes | 28th | |
Sophie germain primes | 19th | |
Twin primes (1st member) | 19th | |
Roman numberals | CCLXXX | CCLXXXI |
Base 2 | 1000110002 | 1000110012 |
Base 3 | 1011013 | 1011023 |
Base 4 | 101204 | 101214 |
Base 5 | 21105 | 21115 |
Base 6 | 11446 | 11456 |
Base 7 | 5507 | 5517 |
Base 8 | 4308 | 4318 |
Base 9 | 3419 | 3429 |
Base 10 | 28010 | 28110 |
Base 11 | 23511 | 23611 |
Base 12 | 1b412 | 1b512 |
Base 13 | 18713 | 18813 |
Base 14 | 16014 | 16114 |
Base 15 | 13a15 | 13b15 |
Base 16 | 11816 | 11916 |