Compare 201809 vs 201811

Property	201809	201811
Type	prime	semiprime
Unique factors	1	2
Total factors	1	2
Prime factorization	201809¹	29¹ × 6959¹
Prime factorization	201809	29 × 6959
Divisors count	2	4
Divisors	1, 201809	1, 29, 6959, 201811
Number of properties	5	1
Chen primes	7580th
Harmonic primes	6807th
Isolated primes	13787th
Primes	18128th
Pythagorean primes	9049th
Semiprimes		45625th
Roman numberals
Base 2	110001010001010001₂	110001010001010011₂
Base 3	101020211102₃	101020211111₃
Base 4	301101101₄	301101103₄
Base 5	22424214₅	22424221₅
Base 6	4154145₆	4154151₆
Base 7	1500236₇	1500241₇
Base 8	612121₈	612123₈
Base 9	336742₉	336744₉
Base 10	201809₁₀	201811₁₀
Base 11	128693₁₁	128695₁₁
Base 12	98955₁₂	98957₁₂
Base 13	70b1a₁₃	70b1c₁₃
Base 14	5378d₁₄	53791₁₄
Base 15	3ebde₁₅	3ebe1₁₅
Base 16	31451₁₆	31453₁₆