Compare 1001981 vs 1001991

Property	1001981	1001991
Type	prime	semiprime
Unique factors	1	2
Total factors	1	2
Prime factorization	1001981¹	3¹ × 333997¹
Prime factorization	1001981	3 × 333997
Divisors count	2	4
Divisors	1, 1001981	1, 3, 333997, 1001991
Number of properties	5	1
Chen primes	30000th
Cousin primes (2nd member)	8162nd
Primes	78648th
Prime triplets (2nd member)	2842nd
Semiprimes		210430th
Twin primes (1st member)	8186th
Roman numberals
Base 2	11110100100111111101₂	11110100101000000111₂
Base 3	1212220110102₃	1212220110210₃
Base 4	3310213331₄	3310220013₄
Base 5	224030411₅	224030431₅
Base 6	33250445₆	33250503₆
Base 7	11342141₇	11342154₇
Base 8	3644775₈	3645007₈
Base 9	1786412₉	1786423₉
Base 10	1001981₁₀	1001991₁₀
Base 11	624892₁₁	6248a1₁₁
Base 12	403a25₁₂	403a33₁₂
Base 13	2910b6₁₃	2910c3₁₃
Base 14	1c1221₁₄	1c122b₁₄
Base 15	14bd3b₁₅	14bd46₁₅
Base 16	f49fd₁₆	f4a07₁₆