Compare 661889 vs 661891

Property	661889	661891
Type	prime	semiprime
Unique factors	1	2
Total factors	1	2
Prime factorization	661889¹	73¹ × 9067¹
Prime factorization	661889	73 × 9067
Divisors count	2	4
Divisors	1, 661889	1, 73, 9067, 661891
Number of properties	6	1
Chen primes	21006th
Isolated primes	42121st
Primes	53708th
Semiprimes		141635th
Sexy primes (2nd member)	11598th
Sexy prime triplets (3rd member)	2116th
Sophie germain primes	5460th
Roman numberals
Base 2	10100001100110000001₂	10100001100110000011₂
Base 3	1020121221102₃	1020121221111₃
Base 4	2201212001₄	2201212003₄
Base 5	132140024₅	132140031₅
Base 6	22104145₆	22104151₆
Base 7	5424464₇	5424466₇
Base 8	2414601₈	2414603₈
Base 9	1217842₉	1217844₉
Base 10	661889₁₀	661891₁₀
Base 11	412318₁₁	41231a₁₁
Base 12	27b055₁₂	27b057₁₂
Base 13	1a2367₁₃	1a2369₁₃
Base 14	1332db₁₄	1332dd₁₄
Base 15	d11ae₁₅	d11b1₁₅
Base 16	a1981₁₆	a1983₁₆