Compare 667991 vs 668243

Property	667991	668243
Type	prime	prime
Unique factors	1	1
Total factors	1	1
Prime factorization	667991¹	668243¹
Prime factorization	667991	668243
Divisors count	2	2
Divisors	1, 667991	1, 668243
Number of properties	4	5
Additive primes		21156th
Chen primes	21176th	21182nd
Cousin primes (2nd member)	5841st
Isolated primes	42471st	42488th
Primes	54168th	54187th
Sophie germain primes		5509th
Roman numberals
Base 2	10100011000101010111₂	10100011001001010011₂
Base 3	1020221022102₃	1020221122202₃
Base 4	2203011113₄	2203021103₄
Base 5	132333431₅	132340433₅
Base 6	22152315₆	22153415₆
Base 7	5451332₇	5452142₇
Base 8	2430527₈	2431123₈
Base 9	1227272₉	1227582₉
Base 10	667991₁₀	668243₁₀
Base 11	416965₁₁	417074₁₁
Base 12	28269b₁₂	28286b₁₂
Base 13	1a507c₁₃	1a5214₁₃
Base 14	135619₁₄	135759₁₄
Base 15	d2dcb₁₅	d2ee8₁₅
Base 16	a3157₁₆	a3253₁₆