Compare 1980 vs 1985

Property	1980	1985
Type	composite number	semiprime
Unique factors	4	2
Total factors	6	2
Prime factorization	2² × 3² × 5¹ × 11¹	5¹ × 397¹
Prime factorization	2 × 2 × 3 × 3 × 5 × 11	5 × 397
Divisors count	36	4
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, 5, 397, 1985
Number of properties	0	1
Semiprimes		575th
Roman numberals	MCMLXXX	MCMLXXXV
Base 2	11110111100₂	11111000001₂
Base 3	2201100₃	2201112₃
Base 4	132330₄	133001₄
Base 5	30410₅	30420₅
Base 6	13100₆	13105₆
Base 7	5526₇	5534₇
Base 8	3674₈	3701₈
Base 9	2640₉	2645₉
Base 10	1980₁₀	1985₁₀
Base 11	1540₁₁	1545₁₁
Base 12	1190₁₂	1195₁₂
Base 13	b94₁₃	b99₁₃
Base 14	a16₁₄	a1b₁₄
Base 15	8c0₁₅	8c5₁₅
Base 16	7bc₁₆	7c1₁₆