Compare 21985 vs 21990

Property	21985	21990
Type	semiprime	composite number
Unique factors	2	4
Total factors	2	4
Prime factorization	5¹ × 4397¹	2¹ × 3¹ × 5¹ × 733¹
Prime factorization	5 × 4397	2 × 3 × 5 × 733
Divisors count	4	16
Divisors	1, 5, 4397, 21985	1, 2, 3, 5, 6, 10, 15, 30, 733, 1466, 2199, 3665, 4398, 7330, 10995, 21990
Number of properties	1	0
Semiprimes	5550th
Roman numberals
Base 2	101010111100001₂	101010111100110₂
Base 3	1010011021₃	1010011110₃
Base 4	11113201₄	11113212₄
Base 5	1200420₅	1200430₅
Base 6	245441₆	245450₆
Base 7	121045₇	121053₇
Base 8	52741₈	52746₈
Base 9	33137₉	33143₉
Base 10	21985₁₀	21990₁₀
Base 11	15577₁₁	15581₁₁
Base 12	10881₁₂	10886₁₂
Base 13	a012₁₃	a017₁₃
Base 14	8025₁₄	802a₁₄
Base 15	67aa₁₅	67b0₁₅
Base 16	55e1₁₆	55e6₁₆