Compare 667991 vs 668009

Property	667991	668009
Type	prime	prime
Unique factors	1	1
Total factors	1	1
Prime factorization	667991¹	668009¹
Prime factorization	667991	668009
Divisors count	2	2
Divisors	1, 667991	1, 668009
Number of properties	4	4
Additive primes		21147th
Chen primes	21176th
Cousin primes (2nd member)	5841st
Isolated primes	42471st	42473rd
Primes	54168th	54170th
Sophie germain primes		5506th
Roman numberals
Base 2	10100011000101010111₂	10100011000101101001₂
Base 3	1020221022102₃	1020221100002₃
Base 4	2203011113₄	2203011221₄
Base 5	132333431₅	132334014₅
Base 6	22152315₆	22152345₆
Base 7	5451332₇	5451356₇
Base 8	2430527₈	2430551₈
Base 9	1227272₉	1227302₉
Base 10	667991₁₀	668009₁₀
Base 11	416965₁₁	416981₁₁
Base 12	28269b₁₂	2826b5₁₂
Base 13	1a507c₁₃	1a5094₁₃
Base 14	135619₁₄	13562d₁₄
Base 15	d2dcb₁₅	d2dde₁₅
Base 16	a3157₁₆	a3169₁₆