Compare 55 vs 61

Property5561
Typesemiprimeprime
Unique factors21
Total factors21
Prime factorization51 × 111611
Prime factorization5 × 1161
Divisors count42
Divisors1, 5, 11, 551, 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
Semiprimes19th 
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 numberalsLVLXI
Base 211011121111012
Base 32001320213
Base 431343314
Base 521052215
Base 613161416
Base 710671157
Base 8678758
Base 9619679
Base 1055106110
Base 1150115611
Base 1247125112
Base 1343134913
Base 143d144514
Base 153a154115
Base 1637163d16
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