Compare 1213 vs 1291

Unique factors11
Total factors11
Prime factorization1213112911
Prime factorization12131291
Divisors count22
Divisors1, 12131, 1291
Number of properties79
Additive primes106th113th
Chen primes 137th
Cousin primes (1st member)45th 
Good primes49th 
Harmonic primes 73rd
Isolated primes117th 
Long primes 80th
Lucky primes 54th
Pythagorean primes97th 
Sexy primes (1st member) 91st
Sexy prime triplets (1st member) 35th
Twin primes (2nd member) 44th
Roman numberalsMCCXIIIMCCXCI
Base 2100101111012101000010112
Base 31122221312022113
Base 410233141100234
Base 5143235201315
Base 65341655516
Base 73352735237
Base 82275824138
Base 91587916849
Base 10121310129110
Base 11a0311a7411
Base 12851128b712
Base 137241378413
Base 146291468314
Base 1555d155b115
Base 164bd1650b16
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