Compare 161981 vs 161990

Property	161981	161990
Type	semiprime	composite number
Unique factors	2	4
Total factors	2	4
Prime factorization	43¹ × 3767¹	2¹ × 5¹ × 97¹ × 167¹
Prime factorization	43 × 3767	2 × 5 × 97 × 167
Divisors count	4	16
Divisors	1, 43, 3767, 161981	1, 2, 5, 10, 97, 167, 194, 334, 485, 835, 970, 1670, 16199, 32398, 80995, 161990
Number of properties	1	0
Semiprimes	36999th
Roman numberals
Base 2	100111100010111101₂	100111100011000110₂
Base 3	22020012022₃	22020012122₃
Base 4	213202331₄	213203012₄
Base 5	20140411₅	20140430₅
Base 6	3245525₆	3245542₆
Base 7	1243151₇	1243163₇
Base 8	474275₈	474306₈
Base 9	266168₉	266178₉
Base 10	161981₁₀	161990₁₀
Base 11	100776₁₁	100784₁₁
Base 12	798a5₁₂	798b2₁₂
Base 13	58961₁₃	5896a₁₃
Base 14	43061₁₄	4306a₁₄
Base 15	32edb₁₅	32ee5₁₅
Base 16	278bd₁₆	278c6₁₆