Compare 1489 vs 1999

Unique factors11
Total factors11
Prime factorization1489119991
Prime factorization14891999
Divisors count22
Divisors1, 14891, 1999
Number of properties128
Centered triangular primes9th10th
Cousin primes (1st member)53rd65th
Harmonic primes81st 
Prime quadruplets (4th member)6th 
Prime quintuplet 2s (4th member)4th 
Prime triplets (2nd member)41st50th
Prime triplets (3rd member)40th49th
Pythagorean primes115th 
Sexy primes (2nd member)103rd128th
Sexy prime triplets (3rd member) 50th
Twin primes (2nd member)50th61st
Ulam primes21st 
Base 2101110100012111110011112
Base 32001011322020013
Base 411310141330334
Base 5214245304445
Base 6105216131316
Base 74225755547
Base 82721837178
Base 92034926619
Base 10148910199910
Base 11113411155811
Base 12a411211a712
Base 138a713baa13
Base 1478514a2b14
Base 15694158d415
Base 165d1167cf16
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