Compare 20991 vs 21000

Property	20991	21000
Type	semiprime	composite number
Unique factors	2	4
Total factors	2	8
Prime factorization	3¹ × 6997¹	2³ × 3¹ × 5³ × 7¹
Prime factorization	3 × 6997	2 × 2 × 2 × 3 × 5 × 5 × 5 × 7
Divisors count	4	64
Divisors	1, 3, 6997, 20991	1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 25, 28, 30, 35, 40, 42, 50, 56, 60, 70, 75, 84, 100, 105, 120, 125, 140, 150, 168, 175, 200, 210, 250, 280, 300, 350, 375, 420, 500, 525, 600, 700, 750, 840, 875, 1000, 1050, 1400, 1500, 1750, 2100, 2625, 3000, 3500, 4200, 5250, 7000, 10500, 21000
Number of properties	1	0
Semiprimes	5325th
Roman numberals
Base 2	101000111111111₂	101001000001000₂
Base 3	1001210110₃	1001210210₃
Base 4	11013333₄	11020020₄
Base 5	1132431₅	1133000₅
Base 6	241103₆	241120₆
Base 7	115125₇	115140₇
Base 8	50777₈	51010₈
Base 9	31713₉	31723₉
Base 10	20991₁₀	21000₁₀
Base 11	14853₁₁	14861₁₁
Base 12	10193₁₂	101a0₁₂
Base 13	9729₁₃	9735₁₃
Base 14	7915₁₄	7920₁₄
Base 15	6346₁₅	6350₁₅
Base 16	51ff₁₆	5208₁₆