Compare 17987 vs 17991

Property	17987	17991
Type	prime	composite number
Unique factors	1	2
Total factors	1	3
Prime factorization	17987¹	3² × 1999¹
Prime factorization	17987	3 × 3 × 1999
Divisors count	2	6
Divisors	1, 17987	1, 3, 9, 1999, 5997, 17991
Number of properties	5	0
Chen primes	1024th
Primes	2063rd
Sexy primes (2nd member)	637th
Super primes	311th
Twin primes (1st member)	315th
Roman numberals
Base 2	100011001000011₂	100011001000111₂
Base 3	220200012₃	220200100₃
Base 4	10121003₄	10121013₄
Base 5	1033422₅	1033431₅
Base 6	215135₆	215143₆
Base 7	103304₇	103311₇
Base 8	43103₈	43107₈
Base 9	26605₉	26610₉
Base 10	17987₁₀	17991₁₀
Base 11	12572₁₁	12576₁₁
Base 12	a4ab₁₂	a4b3₁₂
Base 13	8258₁₃	825c₁₃
Base 14	67ab₁₄	67b1₁₄
Base 15	54e2₁₅	54e6₁₅
Base 16	4643₁₆	4647₁₆