Compare 991981 vs 991989

Property	991981	991989
Type	prime	composite number
Unique factors	1	2
Total factors	1	3
Prime factorization	991981¹	3² × 110221¹
Prime factorization	991981	3 × 3 × 110221
Divisors count	2	6
Divisors	1, 991981	1, 3, 9, 110221, 330663, 991989
Number of properties	6	0
Additive primes	29905th
Chen primes	29751st
Emirps	10998th
Primes	77925th
Sexy primes (1st member)	16280th
Twin primes (2nd member)	8113th
Roman numberals
Base 2	11110010001011101101₂	11110010001011110101₂
Base 3	1212101202001₃	1212101202100₃
Base 4	3302023231₄	3302023311₄
Base 5	223220411₅	223220424₅
Base 6	33132301₆	33132313₆
Base 7	11301034₇	11301045₇
Base 8	3621355₈	3621365₈
Base 9	1771661₉	1771670₉
Base 10	991981₁₀	991989₁₀
Base 11	618321₁₁	618329₁₁
Base 12	3ba091₁₂	3ba099₁₂
Base 13	289693₁₃	28969b₁₃
Base 14	1bb71b₁₄	1bb725₁₄
Base 15	148dc1₁₅	148dc9₁₅
Base 16	f22ed₁₆	f22f5₁₆