Compare 39 vs 61

Property3961
Typesemiprimeprime
Unique factors21
Total factors21
Prime factorization31 × 131611
Prime factorization3 × 1361
Divisors count42
Divisors1, 3, 13, 391, 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
Semiprimes15th 
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 numberalsXXXIXLXI
Base 210011121111012
Base 31110320213
Base 421343314
Base 512452215
Base 610361416
Base 75471157
Base 8478758
Base 9439679
Base 1039106110
Base 1136115611
Base 1233125112
Base 1330134913
Base 142b144514
Base 1529154115
Base 1627163d16
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