Compare 6687 vs 6691

Property	6687	6691
Type	composite number	prime
Unique factors	2	1
Total factors	3	1
Prime factorization	3² × 743¹	6691¹
Prime factorization	3 × 3 × 743	6691
Divisors count	6	2
Divisors	1, 3, 9, 743, 2229, 6687	1, 6691
Number of properties	0	4
Long primes		331st
Primes		863rd
Super primes		150th
Twin primes (2nd member)		154th
Roman numberals
Base 2	1101000011111₂	1101000100011₂
Base 3	100011200₃	100011211₃
Base 4	1220133₄	1220203₄
Base 5	203222₅	203231₅
Base 6	50543₆	50551₆
Base 7	25332₇	25336₇
Base 8	15037₈	15043₈
Base 9	10150₉	10154₉
Base 10	6687₁₀	6691₁₀
Base 11	502a₁₁	5033₁₁
Base 12	3a53₁₂	3a57₁₂
Base 13	3075₁₃	3079₁₃
Base 14	2619₁₄	261d₁₄
Base 15	1eac₁₅	1eb1₁₅
Base 16	1a1f₁₆	1a23₁₆