1. Numbers
  2. Compare 128201 vs 128209

Compare 128201 vs 128209

Property128201128209
Typeprimesemiprime
Unique factors12
Total factors12
Prime factorization1282011291 × 44211
Prime factorization12820129 × 4421
Divisors count24
Divisors1, 1282011, 29, 4421, 128209
Number of properties61
Chen primes5188th 
Good primes784th 
Primes12001st 
Pythagorean primes5966th 
Semiprimes 29648th
Twin primes (1st member)1496th 
Ulam primes839th 
Roman numberals  
Base 2111110100110010012111110100110100012
Base 3201112120123201112121113
Base 413310302141331031014
Base 5131003015131003145
Base 62425305624253216
Base 71042523710425347
Base 837231183723218
Base 921476592147749
Base 101282011012820910
Base 1188357118836411
Base 1262235126224112
Base 1346478134648313
Base 1434a131434a1b14
Base 1527ebb1527ec415
Base 161f4c9161f4d116
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