Compare 1971 vs 1981

Property	1971	1981
Type	composite number	semiprime
Unique factors	2	2
Total factors	4	2
Prime factorization	3³ × 73¹	7¹ × 283¹
Prime factorization	3 × 3 × 3 × 73	7 × 283
Divisors count	8	4
Divisors	1, 3, 9, 27, 73, 219, 657, 1971	1, 7, 283, 1981
Number of properties	0	1
Semiprimes		572nd
Roman numberals	MCMLXXI	MCMLXXXI
Base 2	11110110011₂	11110111101₂
Base 3	2201000₃	2201101₃
Base 4	132303₄	132331₄
Base 5	30341₅	30411₅
Base 6	13043₆	13101₆
Base 7	5514₇	5530₇
Base 8	3663₈	3675₈
Base 9	2630₉	2641₉
Base 10	1971₁₀	1981₁₀
Base 11	1532₁₁	1541₁₁
Base 12	1183₁₂	1191₁₂
Base 13	b88₁₃	b95₁₃
Base 14	a0b₁₄	a17₁₄
Base 15	8b6₁₅	8c1₁₅
Base 16	7b3₁₆	7bd₁₆