1. Numbers
  2. Compare 121997 vs 121999

Compare 121997 vs 121999

Property121997121999
Typeprimesemiprime
Unique factors12
Total factors12
Prime factorization1219971191 × 64211
Prime factorization12199719 × 6421
Divisors count24
Divisors1, 1219971, 19, 6421, 121999
Number of properties81
Additive primes4722nd 
Chen primes4978th 
Cousin primes (2nd member)1430th 
Isolated primes8594th 
Left-truncatable primes348th 
Primes11475th 
Pythagorean primes5707th 
Restricted left-truncatable primes32nd 
Semiprimes 28272nd
Roman numberals  
Base 2111011100100011012111011100100011112
Base 3200121001023200121001113
Base 413130203141313020334
Base 5124004425124004445
Base 62340445623404516
Base 71015451710154537
Base 835621583562178
Base 920531292053149
Base 101219971012199910
Base 1183727118372911
Base 125a725125a72712
Base 13436b513436b713
Base 1432661143266314
Base 1526232152623415
Base 161dc8d161dc8f16
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