1. Numbers
  2. Compare 21005 vs 21013

Compare 21005 vs 21013

Property2100521013
Typesemiprimeprime
Unique factors21
Total factors21
Prime factorization51 × 42011210131
Prime factorization5 × 420121013
Divisors count42
Divisors1, 5, 4201, 210051, 21013
Number of properties113
Additive primes 1095th
Centered square primes 37th
Cousin primes (1st member) 358th
Harmonic primes 868th
Lucky primes 384th
Primes 2363rd
Prime quadruplets (2nd member) 20th
Prime quintuplet 2s (2nd member) 7th
Prime triplets (1st member) 176th
Prime triplets (2nd member) 175th
Pythagorean primes 1174th
Semiprimes5330th 
Sexy primes (1st member) 715th
Twin primes (2nd member) 358th
Roman numberals  
Base 210100100000110121010010000101012
Base 31001210222310012110213
Base 4110200314110201114
Base 51133010511330235
Base 624112562411416
Base 711514571151567
Base 8510158510258
Base 9317289317379
Base 1021005102101310
Base 1114866111487311
Base 12101a512101b112
Base 13973a13974513
Base 14792514792d14
Base 15635515635d15
Base 16520d16521516
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