Compare 81001 vs 81009

Property	81001	81009
Type	prime	composite number
Unique factors	1	2
Total factors	1	3
Prime factorization	81001¹	3² × 9001¹
Prime factorization	81001	3 × 3 × 9001
Divisors count	2	6
Divisors	1, 81001	1, 3, 9, 9001, 27003, 81009
Number of properties	5	0
Harmonic primes	2993rd
Isolated primes	5887th
Lucky primes	1068th
Primes	7926th
Pythagorean primes	3950th
Roman numberals
Base 2	10011110001101001₂	10011110001110001₂
Base 3	11010010001₃	11010010100₃
Base 4	103301221₄	103301301₄
Base 5	10043001₅	10043014₅
Base 6	1423001₆	1423013₆
Base 7	455104₇	455115₇
Base 8	236151₈	236161₈
Base 9	133101₉	133110₉
Base 10	81001₁₀	81009₁₀
Base 11	55948₁₁	55955₁₁
Base 12	3aa61₁₂	3aa69₁₂
Base 13	2ab3b₁₃	2ab46₁₃
Base 14	2173b₁₄	21745₁₄
Base 15	19001₁₅	19009₁₅
Base 16	13c69₁₆	13c71₁₆