Compare 660661 vs 660666

Property	660661	660666
Type	prime	composite number
Unique factors	1	4
Total factors	1	4
Prime factorization	660661¹	2¹ × 3¹ × 149¹ × 739¹
Prime factorization	660661	2 × 3 × 149 × 739
Divisors count	2	16
Divisors	1, 660661	1, 2, 3, 6, 149, 298, 447, 739, 894, 1478, 2217, 4434, 110111, 220222, 330333, 660666
Number of properties	3	0
Centered decagonal primes	153rd
Primes	53621st
Twin primes (2nd member)	5785th
Roman numberals
Base 2	10100001010010110101₂	10100001010010111010₂
Base 3	1020120020221₃	1020120021010₃
Base 4	2201102311₄	2201102322₄
Base 5	132120121₅	132120131₅
Base 6	22054341₆	22054350₆
Base 7	5421061₇	5421066₇
Base 8	2412265₈	2412272₈
Base 9	1216227₉	1216233₉
Base 10	660661₁₀	660666₁₀
Base 11	411401₁₁	411406₁₁
Base 12	27a3b1₁₂	27a3b6₁₂
Base 13	1a1931₁₃	1a1936₁₃
Base 14	132aa1₁₄	132aa6₁₄
Base 15	d0b41₁₅	d0b46₁₅
Base 16	a14b5₁₆	a14ba₁₆