Compare 667991 vs 668471

Property	667991	668471
Type	prime	prime
Unique factors	1	1
Total factors	1	1
Prime factorization	667991¹	668471¹
Prime factorization	667991	668471
Divisors count	2	2
Divisors	1, 667991	1, 668471
Number of properties	4	6
Chen primes	21176th	21184th
Cousin primes (2nd member)	5841st
Good primes		2039th
Isolated primes	42471st	42494th
Primes	54168th	54193rd
Sophie germain primes		5511th
Super primes		5517th
Roman numberals
Base 2	10100011000101010111₂	10100011001100110111₂
Base 3	1020221022102₃	1020221222012₃
Base 4	2203011113₄	2203030313₄
Base 5	132333431₅	132342341₅
Base 6	22152315₆	22154435₆
Base 7	5451332₇	5452616₇
Base 8	2430527₈	2431467₈
Base 9	1227272₉	1227865₉
Base 10	667991₁₀	668471₁₀
Base 11	416965₁₁	417261₁₁
Base 12	28269b₁₂	282a1b₁₂
Base 13	1a507c₁₃	1a535b₁₃
Base 14	135619₁₄	13587d₁₄
Base 15	d2dcb₁₅	d30eb₁₅
Base 16	a3157₁₆	a3337₁₆