1. Numbers
  2. Compare 201821 vs 201919

Compare 201821 vs 201919

Property201821201919
Typeprimeprime
Unique factors11
Total factors11
Prime factorization20182112019191
Prime factorization201821201919
Divisors count22
Divisors1, 2018211, 201919
Number of properties105
Chen primes7581st7585th
Cousin primes (1st member) 2154th
Harmonic primes 6809th
Isolated primes 13795th
Long primes6796th 
Primes18129th18140th
Prime quadruplets (1st member)54th 
Prime quintuplet 2s (1st member)15th 
Prime triplets (1st member)844th 
Pythagorean primes9050th 
Sexy primes (1st member)4326th 
Sexy prime triplets (1st member)870th 
Twin primes (1st member)2172nd 
Roman numberals  
Base 211000101000101110121100010100101111112
Base 310102021121231010202221113
Base 430110113143011023334
Base 5224242415224301345
Base 64154205641544516
Base 71500254715004547
Base 861213586122778
Base 933675593368749
Base 102018211020191910
Base 111286a41112878311
Base 12989651298a2712
Base 1370b291370ba313
Base 145379b145382b14
Base 153ebeb153ec6415
Base 163145d16314bf16
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