1. Numbers
  2. Compare 1990 vs 1997

Compare 1990 vs 1997

Property19901997
Typecomposite numberprime
Unique factors31
Total factors31
Prime factorization21 × 51 × 199119971
Prime factorization2 × 5 × 1991997
Divisors count82
Divisors1, 2, 5, 10, 199, 398, 995, 19901, 1997
Number of properties010
Chen primes 185th
Cousin primes (2nd member) 64th
Good primes 64th
Left-truncatable primes 62nd
Primes 302nd
Prime triplets (1st member) 50th
Prime triplets (2nd member) 49th
Pythagorean primes 147th
Sexy primes (1st member) 129th
Twin primes (1st member) 61st
Roman numberalsMCMXCMCMXCVII
Base 2111110001102111110011012
Base 32201201322012223
Base 413301241330314
Base 5304305304425
Base 6131146131256
Base 75542755527
Base 83706837158
Base 92651926589
Base 10199010199710
Base 11154a11155611
Base 12119a1211a512
Base 13ba113ba813
Base 14a2214a2914
Base 158ca158d215
Base 167c6167cd16
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