Compare 10 vs 11

Unique factors21
Total factors21
Prime factorization21 × 51111
Prime factorization2 × 511
Divisors count42
Divisors1, 2, 5, 101, 11
Number of properties136
Additive primes 5th
Centered decagonal primes 1st
Chen primes 5th
Class 1+ primes 5th
Cousin primes (2nd member) 2nd
Dihedral primes 3rd
Good primes 2nd
Lucas primes 4th
Mills primes 2nd
Palindromic primes 5th
Pierpont primes of the 2nd kind 5th
Primes 5th
Prime quadruplets (1st member) 2nd
Prime quadruplets (3rd member) 1st
Prime quintuplet 1s (2nd member) 1st
Prime quintuplet 2s (1st member) 2nd
Prime quintuplet 2s (3rd member) 1st
Prime sextuplets (2nd member) 1st
Prime triplets (1st member) 3rd
Prime triplets (2nd member) 2nd
Prime triplets (3rd member) 1st
Safe primes 3rd
Sexy primes (1st member) 3rd
Sexy primes (2nd member) 1st
Sexy prime quadrupletss (1st member) 2nd
Sexy prime quadrupletss (2nd member) 1st
Sexy prime triplets (1st member) 3rd
Sexy prime triplets (2nd member) 1st
Solinas primes 4th
Sophie germain primes 4th
Super primes 3rd
Thabit primes 3rd
Twin primes (1st member) 3rd
Ulam primes 3rd
Wagstaff primes 2nd
Wedderburn-etherington primes 3rd
Roman numberalsXXI
Base 21010210112
Base 310131023
Base 4224234
Base 5205215
Base 6146156
Base 7137147
Base 8128138
Base 9119129
Base 1010101110
Base 11a111011
Base 12a12b12
Base 13a13b13
Base 14a14b14
Base 15a15b15
Base 16a16b16
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