Compare 201209 vs 201218

Property	201209	201218
Type	prime	semiprime
Unique factors	1	2
Total factors	1	2
Prime factorization	201209¹	2¹ × 100609¹
Prime factorization	201209	2 × 100609
Divisors count	2	4
Divisors	1, 201209	1, 2, 100609, 201218
Number of properties	6	1
Chen primes	7562nd
Primes	18078th
Pythagorean primes	9021st
Semiprimes		45506th
Sexy primes (2nd member)	4316th
Sophie germain primes	2065th
Twin primes (1st member)	2166th
Roman numberals
Base 2	110001000111111001₂	110001001000000010₂
Base 3	101020000012₃	101020000112₃
Base 4	301013321₄	301020002₄
Base 5	22414314₅	22414333₅
Base 6	4151305₆	4151322₆
Base 7	1465421₇	1465433₇
Base 8	610771₈	611002₈
Base 9	336005₉	336015₉
Base 10	201209₁₀	201218₁₀
Base 11	128198₁₁	1281a6₁₁
Base 12	98535₁₂	98542₁₂
Base 13	70778₁₃	70784₁₃
Base 14	53481₁₄	5348a₁₄
Base 15	3e93e₁₅	3e948₁₅
Base 16	311f9₁₆	31202₁₆