Compare 199921 vs 199999

Property	199921	199999
Type	prime	prime
Unique factors	1	1
Total factors	1	1
Prime factorization	199921¹	199999¹
Prime factorization	199921	199999
Divisors count	2	2
Divisors	1, 199921	1, 199999
Number of properties	5	4
Additive primes	7221st
Cousin primes (1st member)		2136th
Isolated primes	13662nd	13665th
Lucky primes		2316th
Primes	17979th	17984th
Pythagorean primes	8975th
Ulam primes	1289th
Roman numberals
Base 2	110000110011110001₂	110000110100111111₂
Base 3	101011020111₃	101011100101₃
Base 4	300303301₄	300310333₄
Base 5	22344141₅	22344444₅
Base 6	4141321₆	4141531₆
Base 7	1461601₇	1462042₇
Base 8	606361₈	606477₈
Base 9	334214₉	334311₉
Base 10	199921₁₀	199999₁₀
Base 11	127227₁₁	127298₁₁
Base 12	97841₁₂	978a7₁₂
Base 13	6ccc7₁₃	70057₁₃
Base 14	52c01₁₄	52c59₁₄
Base 15	3e381₁₅	3e3d4₁₅
Base 16	30cf1₁₆	30d3f₁₆