Compare 9981 vs 9991

Property	9981	9991
Type	composite number	semiprime
Unique factors	2	2
Total factors	3	2
Prime factorization	3² × 1109¹	97¹ × 103¹
Prime factorization	3 × 3 × 1109	97 × 103
Divisors count	6	4
Divisors	1, 3, 9, 1109, 3327, 9981	1, 97, 103, 9991
Number of properties	0	1
Semiprimes		2621st
Roman numberals
Base 2	10011011111101₂	10011100000111₂
Base 3	111200200₃	111201001₃
Base 4	2123331₄	2130013₄
Base 5	304411₅	304431₅
Base 6	114113₆	114131₆
Base 7	41046₇	41062₇
Base 8	23375₈	23407₈
Base 9	14620₉	14631₉
Base 10	9981₁₀	9991₁₀
Base 11	7554₁₁	7563₁₁
Base 12	5939₁₂	5947₁₂
Base 13	470a₁₃	4717₁₃
Base 14	38cd₁₄	38d9₁₄
Base 15	2e56₁₅	2e61₁₅
Base 16	26fd₁₆	2707₁₆