Compare 666667 vs 667987

Property	666667	667987
Type	prime	prime
Unique factors	1	1
Total factors	1	1
Prime factorization	666667¹	667987¹
Prime factorization	666667	667987
Divisors count	2	2
Divisors	1, 666667	1, 667987
Number of properties	5	6
Additive primes	21106th	21146th
Cousin primes (1st member)	5831st	5841st
Isolated primes	42397th	42470th
Lucky primes	6184th
Primes	54070th	54167th
Super primes		5515th
Ulam primes		3980th
Roman numberals
Base 2	10100010110000101011₂	10100011000101010011₂
Base 3	1020212111101₃	1020221022021₃
Base 4	2202300223₄	2203011103₄
Base 5	132313132₅	132333422₅
Base 6	22142231₆	22152311₆
Base 7	5444431₇	5451325₇
Base 8	2426053₈	2430523₈
Base 9	1225441₉	1227267₉
Base 10	666667₁₀	667987₁₀
Base 11	415971₁₁	416961₁₁
Base 12	281977₁₂	282697₁₂
Base 13	1a45a1₁₃	1a5078₁₃
Base 14	134d51₁₄	135615₁₄
Base 15	d27e7₁₅	d2dc7₁₅
Base 16	a2c2b₁₆	a3153₁₆