Compare 661989 vs 661991

Property	661989	661991
Type	semiprime	composite number
Unique factors	2	2
Total factors	2	3
Prime factorization	3¹ × 220663¹	11² × 5471¹
Prime factorization	3 × 220663	11 × 11 × 5471
Divisors count	4	6
Divisors	1, 3, 220663, 661989	1, 11, 121, 5471, 60181, 661991
Number of properties	1	0
Semiprimes	141649th
Roman numberals
Base 2	10100001100111100101₂	10100001100111100111₂
Base 3	1020122002010₃	1020122002012₃
Base 4	2201213211₄	2201213213₄
Base 5	132140424₅	132140431₅
Base 6	22104433₆	22104435₆
Base 7	5424666₇	5425001₇
Base 8	2414745₈	2414747₈
Base 9	1218063₉	1218065₉
Base 10	661989₁₀	661991₁₀
Base 11	4123a9₁₁	412400₁₁
Base 12	27b119₁₂	27b11b₁₂
Base 13	1a2413₁₃	1a2415₁₃
Base 14	13336d₁₄	133371₁₄
Base 15	d1229₁₅	d122b₁₅
Base 16	a19e5₁₆	a19e7₁₆