Compare 1231 vs 1291

Unique factors11
Total factors11
Prime factorization1231112911
Prime factorization12311291
Divisors count22
Divisors1, 12311, 1291
Number of properties69
Additive primes108th113th
Chen primes 137th
Harmonic primes 73rd
Long primes 80th
Lucky primes52nd54th
Sexy primes (1st member)88th91st
Sexy prime triplets (1st member) 35th
Twin primes (2nd member)42nd44th
Roman numberalsMCCXXXIMCCXCI
Base 2100110011112101000010112
Base 31200121312022113
Base 410303341100234
Base 5144115201315
Base 65411655516
Base 73406735237
Base 82317824138
Base 91617916849
Base 10123110129110
Base 11a1a11a7411
Base 12867128b712
Base 137391378413
Base 1463d1468314
Base 15571155b115
Base 164cf1650b16
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