Compare 201809 vs 201819

Property	201809	201819
Type	prime	semiprime
Unique factors	1	2
Total factors	1	2
Prime factorization	201809¹	3¹ × 67273¹
Prime factorization	201809	3 × 67273
Divisors count	2	4
Divisors	1, 201809	1, 3, 67273, 201819
Number of properties	5	1
Chen primes	7580th
Harmonic primes	6807th
Isolated primes	13787th
Primes	18128th
Pythagorean primes	9049th
Semiprimes		45628th
Roman numberals
Base 2	110001010001010001₂	110001010001011011₂
Base 3	101020211102₃	101020211210₃
Base 4	301101101₄	301101123₄
Base 5	22424214₅	22424234₅
Base 6	4154145₆	4154203₆
Base 7	1500236₇	1500252₇
Base 8	612121₈	612133₈
Base 9	336742₉	336753₉
Base 10	201809₁₀	201819₁₀
Base 11	128693₁₁	1286a2₁₁
Base 12	98955₁₂	98963₁₂
Base 13	70b1a₁₃	70b27₁₃
Base 14	5378d₁₄	53799₁₄
Base 15	3ebde₁₅	3ebe9₁₅
Base 16	31451₁₆	3145b₁₆