1. Numbers
  2. Compare 1997 vs 2539

Compare 1997 vs 2539

Property19972539
Typeprimeprime
Unique factors11
Total factors11
Prime factorization1997125391
Prime factorization19972539
Divisors count22
Divisors1, 19971, 2539
Number of properties106
Additive primes 194th
Chen primes185th 
Cousin primes (1st member) 77th
Cousin primes (2nd member)64th 
Good primes64th73rd
Isolated primes 228th
Left-truncatable primes62nd 
Long primes 146th
Primes302nd371st
Prime triplets (1st member)50th 
Prime triplets (2nd member)49th 
Pythagorean primes147th 
Sexy primes (1st member)129th 
Twin primes (1st member)61st 
Roman numberalsMCMXCVIIMMDXXXIX
Base 21111100110121001111010112
Base 322012223101110013
Base 413303142132234
Base 5304425401245
Base 6131256154316
Base 755527102557
Base 83715847538
Base 92658934319
Base 10199710253910
Base 1115561119a911
Base 1211a512157712
Base 13ba813120413
Base 14a2914cd514
Base 158d215b4415
Base 167cd169eb16
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