1. Numbers
  2. Compare 1282 vs 1291

Compare 1282 vs 1291

Property12821291
Typesemiprimeprime
Unique factors21
Total factors21
Prime factorization21 × 641112911
Prime factorization2 × 6411291
Divisors count42
Divisors1, 2, 641, 12821, 1291
Number of properties19
Additive primes 113th
Chen primes 137th
Harmonic primes 73rd
Long primes 80th
Lucky primes 54th
Primes 210th
Semiprimes377th 
Sexy primes (1st member) 91st
Sexy prime triplets (1st member) 35th
Twin primes (2nd member) 44th
Roman numberalsMCCLXXXIIMCCXCI
Base 2101000000102101000010112
Base 31202111312022113
Base 411000241100234
Base 5201125201315
Base 65534655516
Base 73511735237
Base 82402824138
Base 91674916849
Base 10128210129110
Base 11a6611a7411
Base 128aa128b712
Base 137781378413
Base 146781468314
Base 155a7155b115
Base 165021650b16
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