Compare 199909 vs 199999

Property	199909	199999
Type	prime	prime
Unique factors	1	1
Total factors	1	1
Prime factorization	199909¹	199999¹
Prime factorization	199909	199999
Divisors count	2	2
Divisors	1, 199909	1, 199999
Number of properties	4	4
Additive primes	7220th
Cousin primes (1st member)		2136th
Isolated primes	13661st	13665th
Lucky primes		2316th
Primes	17978th	17984th
Pythagorean primes	8974th
Roman numberals
Base 2	110000110011100101₂	110000110100111111₂
Base 3	101011020001₃	101011100101₃
Base 4	300303211₄	300310333₄
Base 5	22344114₅	22344444₅
Base 6	4141301₆	4141531₆
Base 7	1461553₇	1462042₇
Base 8	606345₈	606477₈
Base 9	334201₉	334311₉
Base 10	199909₁₀	199999₁₀
Base 11	127216₁₁	127298₁₁
Base 12	97831₁₂	978a7₁₂
Base 13	6ccb8₁₃	70057₁₃
Base 14	52bd3₁₄	52c59₁₄
Base 15	3e374₁₅	3e3d4₁₅
Base 16	30ce5₁₆	30d3f₁₆