Compare 9 vs 61

Unique factors11
Total factors21
Prime factorization32611
Prime factorization3 × 361
Divisors count32
Divisors1, 3, 91, 61
Number of properties112
Additive primes 11th
Centered decagonal primes 3rd
Centered square primes 4th
Cuban primes 1 4th
Long primes 8th
Primes 18th
Pythagorean primes 8th
Sexy primes (1st member) 12th
Sexy prime quadrupletss (1st member) 4th
Sexy prime triplets (1st member) 8th
Solinas primes 15th
Twin primes (2nd member) 7th
Roman numberalsIXLXI
Base 2100121111012
Base 3100320213
Base 42143314
Base 51452215
Base 61361416
Base 71271157
Base 8118758
Base 9109679
Base 109106110
Base 119115611
Base 129125112
Base 139134913
Base 149144514
Base 159154115
Base 169163d16
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