Compare 209987 vs 209990

Property	209987	209990
Type	prime	composite number
Unique factors	1	5
Total factors	1	5
Prime factorization	209987¹	2¹ × 5¹ × 11¹ × 23¹ × 83¹
Prime factorization	209987	2 × 5 × 11 × 23 × 83
Divisors count	2	32
Divisors	1, 209987	1, 2, 5, 10, 11, 22, 23, 46, 55, 83, 110, 115, 166, 230, 253, 415, 506, 830, 913, 1265, 1826, 1909, 2530, 3818, 4565, 9130, 9545, 19090, 20999, 41998, 104995, 209990
Number of properties	4	0
Cousin primes (2nd member)	2225th
Harmonic primes	7041st
Isolated primes	14302nd
Primes	18807th
Roman numberals
Base 2	110011010001000011₂	110011010001000110₂
Base 3	101200001022₃	101200001102₃
Base 4	303101003₄	303101012₄
Base 5	23204422₅	23204430₅
Base 6	4300055₆	4300102₆
Base 7	1533131₇	1533134₇
Base 8	632103₈	632106₈
Base 9	350038₉	350042₉
Base 10	209987₁₀	209990₁₀
Base 11	133848₁₁	133850₁₁
Base 12	a162b₁₂	a1632₁₂
Base 13	7476b₁₃	74771₁₃
Base 14	56751₁₄	56754₁₄
Base 15	42342₁₅	42345₁₅
Base 16	33443₁₆	33446₁₆