Compare 16661 vs 16666

Property	16661	16666
Type	prime	composite number
Unique factors	1	3
Total factors	1	3
Prime factorization	16661¹	2¹ × 13¹ × 641¹
Prime factorization	16661	2 × 13 × 641
Divisors count	2	8
Divisors	1, 16661	1, 2, 13, 26, 641, 1282, 8333, 16666
Number of properties	8	0
Chen primes	971st
Cousin primes (2nd member)	309th
Harmonic primes	699th
Isolated primes	1343rd
Long primes	745th
Palindromic primes	39th
Primes	1928th
Pythagorean primes	956th
Roman numberals
Base 2	100000100010101₂	100000100011010₂
Base 3	211212002₃	211212021₃
Base 4	10010111₄	10010122₄
Base 5	1013121₅	1013131₅
Base 6	205045₆	205054₆
Base 7	66401₇	66406₇
Base 8	40425₈	40432₈
Base 9	24762₉	24767₉
Base 10	16661₁₀	16666₁₀
Base 11	11577₁₁	11581₁₁
Base 12	9785₁₂	978a₁₂
Base 13	7778₁₃	7780₁₃
Base 14	6101₁₄	6106₁₄
Base 15	4e0b₁₅	4e11₁₅
Base 16	4115₁₆	411a₁₆