Compare 666647 vs 666989

Property	666647	666989
Type	prime	prime
Unique factors	1	1
Total factors	1	1
Prime factorization	666647¹	666989¹
Prime factorization	666647	666989
Divisors count	2	2
Divisors	1, 666647	1, 666989
Number of properties	6	4
Chen primes	21139th	21147th
Cousin primes (2nd member)	5830th
Isolated primes		42418th
Primes	54068th	54095th
Prime triplets (2nd member)	2130th
Safe primes	3122nd
Sexy primes (2nd member)		11671st
Twin primes (1st member)	5837th
Roman numberals
Base 2	10100010110000010111₂	10100010110101101101₂
Base 3	1020212110122₃	1020212221022₃
Base 4	2202300113₄	2202311231₄
Base 5	132313042₅	132320424₅
Base 6	22142155₆	22143525₆
Base 7	5444402₇	5445401₇
Base 8	2426027₈	2426555₈
Base 9	1225418₉	1225838₉
Base 10	666647₁₀	666989₁₀
Base 11	415953₁₁	416134₁₁
Base 12	28195b₁₂	281ba5₁₂
Base 13	1a4587₁₃	1a478b₁₃
Base 14	134d39₁₄	135101₁₄
Base 15	d27d2₁₅	d295e₁₅
Base 16	a2c17₁₆	a2d6d₁₆