1. Numbers
  2. Compare 197 vs 521

Compare 197 vs 521

Property197521
Typeprimeprime
Unique factors11
Total factors11
Prime factorization19715211
Prime factorization197521
Divisors count22
Divisors1, 1971, 521
Number of properties136
Additive primes26th 
Centered heptagonal primes3rd 
Chen primes35th70th
Cousin primes (2nd member)14th 
Left-truncatable primes20th 
Lucas primes 8th
Primes45th98th
Prime quadruplets (3rd member)4th 
Prime triplets (2nd member)14th 
Prime triplets (3rd member)13th 
Pythagorean primes21st46th
Sexy primes (2nd member)25th 
Solinas primes 39th
Twin primes (1st member)15th25th
Ulam primes9th 
Roman numberalsCXCVIIDXXI
Base 211000101210000010012
Base 32102232010223
Base 430114200214
Base 51242540415
Base 6525622256
Base 7401713437
Base 8305810118
Base 923896389
Base 101971052110
Base 1116a1143411
Base 121451237512
Base 131221331113
Base 141011429314
Base 15d21524b15
Base 16c51620916
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