Compare 19890 vs 19891

Property	19890	19891
Type	composite number	prime
Unique factors	5	1
Total factors	6	1
Prime factorization	2¹ × 3² × 5¹ × 13¹ × 17¹	19891¹
Prime factorization	2 × 3 × 3 × 5 × 13 × 17	19891
Divisors count	48	2
Divisors	1, 2, 3, 5, 6, 9, 10, 13, 15, 17, 18, 26, 30, 34, 39, 45, 51, 65, 78, 85, 90, 102, 117, 130, 153, 170, 195, 221, 234, 255, 306, 390, 442, 510, 585, 663, 765, 1105, 1170, 1326, 1530, 1989, 2210, 3315, 3978, 6630, 9945, 19890	1, 19891
Number of properties	0	4
Harmonic primes		815th
Palindromic primes		45th
Primes		2250th
Twin primes (2nd member)		340th
Roman numberals
Base 2	100110110110010₂	100110110110011₂
Base 3	1000021200₃	1000021201₃
Base 4	10312302₄	10312303₄
Base 5	1114030₅	1114031₅
Base 6	232030₆	232031₆
Base 7	111663₇	111664₇
Base 8	46662₈	46663₈
Base 9	30250₉	30251₉
Base 10	19890₁₀	19891₁₀
Base 11	13a42₁₁	13a43₁₁
Base 12	b616₁₂	b617₁₂
Base 13	9090₁₃	9091₁₃
Base 14	736a₁₄	736b₁₄
Base 15	5d60₁₅	5d61₁₅
Base 16	4db2₁₆	4db3₁₆