Compare 1980 vs 1990

Property	1980	1990
Type	composite number	composite number
Unique factors	4	3
Total factors	6	3
Prime factorization	2² × 3² × 5¹ × 11¹	2¹ × 5¹ × 199¹
Prime factorization	2 × 2 × 3 × 3 × 5 × 11	2 × 5 × 199
Divisors count	36	8
Divisors	1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 20, 22, 30, 33, 36, 44, 45, 55, 60, 66, 90, 99, 110, 132, 165, 180, 198, 220, 330, 396, 495, 660, 990, 1980	1, 2, 5, 10, 199, 398, 995, 1990
Number of properties	0	0
Roman numberals	MCMLXXX	MCMXC
Base 2	11110111100₂	11111000110₂
Base 3	2201100₃	2201201₃
Base 4	132330₄	133012₄
Base 5	30410₅	30430₅
Base 6	13100₆	13114₆
Base 7	5526₇	5542₇
Base 8	3674₈	3706₈
Base 9	2640₉	2651₉
Base 10	1980₁₀	1990₁₀
Base 11	1540₁₁	154a₁₁
Base 12	1190₁₂	119a₁₂
Base 13	b94₁₃	ba1₁₃
Base 14	a16₁₄	a22₁₄
Base 15	8c0₁₅	8ca₁₅
Base 16	7bc₁₆	7c6₁₆