Compare 8217 vs 8221

Property	8217	8221
Type	composite number	prime
Unique factors	3	1
Total factors	4	1
Prime factorization	3² × 11¹ × 83¹	8221¹
Prime factorization	3 × 3 × 11 × 83	8221
Divisors count	12	2
Divisors	1, 3, 9, 11, 33, 83, 99, 249, 747, 913, 2739, 8217	1, 8221
Number of properties	0	7
Additive primes		505th
Chen primes		554th
Lucky primes		187th
Primes		1031st
Pythagorean primes		511th
Super primes		173rd
Twin primes (2nd member)		178th
Roman numberals
Base 2	10000000011001₂	10000000011101₂
Base 3	102021100₃	102021111₃
Base 4	2000121₄	2000131₄
Base 5	230332₅	230341₅
Base 6	102013₆	102021₆
Base 7	32646₇	32653₇
Base 8	20031₈	20035₈
Base 9	12240₉	12244₉
Base 10	8217₁₀	8221₁₀
Base 11	61a0₁₁	61a4₁₁
Base 12	4909₁₂	4911₁₂
Base 13	3981₁₃	3985₁₃
Base 14	2dcd₁₄	2dd3₁₄
Base 15	267c₁₅	2681₁₅
Base 16	2019₁₆	201d₁₆