1. Numbers
  2. Compare 21387 vs 21397

Compare 21387 vs 21397

Property2138721397
Typesemiprimeprime
Unique factors21
Total factors21
Prime factorization31 × 71291213971
Prime factorization3 × 712921397
Divisors count42
Divisors1, 3, 7129, 213871, 21397
Number of properties15
Cousin primes (1st member) 365th
Isolated primes 1677th
Primes 2402nd
Pythagorean primes 1191st
Semiprimes5419th 
Sexy primes (2nd member) 729th
Roman numberals  
Base 210100111000101121010011100101012
Base 31002100010310021001113
Base 4110320234110321114
Base 51141022511410425
Base 624300362430216
Base 711623271162457
Base 8516138516258
Base 9323039323149
Base 1021387102139710
Base 1115083111509211
Base 1210463121047112
Base 13997213997c13
Base 147b19147b2514
Base 15650c15651715
Base 16538b16539516
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