Compare 557 vs 661

Property557661
Typeprimeprime
Unique factors11
Total factors11
Prime factorization55716611
Prime factorization557661
Divisors count22
Divisors1, 5571, 661
Number of properties95
Additive primes55th65th
Centered decagonal primes 8th
Chen primes72nd 
Good primes29th 
Harmonic primes43rd 
Isolated primes53rd 
Primes102nd121st
Pythagorean primes48th57th
Sexy primes (1st member)49th 
Sexy prime triplets (1st member)20th 
Twin primes (2nd member) 30th
Roman numberalsDLVIIDCLXI
Base 21000101101210100101012
Base 320212232201113
Base 4202314221114
Base 542125101215
Base 62325630216
Base 71424716337
Base 81055812258
Base 967898149
Base 105571066110
Base 114671155111
Base 123a51247112
Base 1333b133bb13
Base 142bb1435314
Base 15272152e115
Base 1622d1629516
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