Compare 640249 vs 640943

Property	640249	640943
Type	prime	prime
Unique factors	1	1
Total factors	1	1
Prime factorization	640249¹	640943¹
Prime factorization	640249	640943
Divisors count	2	2
Divisors	1, 640249	1, 640943
Number of properties	3	6
Chen primes		20406th
Isolated primes		40870th
Primes	52098th	52145th
Safe primes		3021st
Sexy primes (1st member)		11299th
Twin primes (2nd member)	5635th
Ulam primes	3819th	3822nd
Roman numberals
Base 2	10011100010011111001₂	10011100011110101111₂
Base 3	1012112020221₃	1012120012122₃
Base 4	2130103321₄	2130132233₄
Base 5	130441444₅	131002233₅
Base 6	21420041₆	21423155₆
Base 7	5304421₇	5306432₇
Base 8	2342371₈	2343657₈
Base 9	1175227₉	1176178₉
Base 10	640249₁₀	640943₁₀
Base 11	3a8035₁₁	3a8606₁₁
Base 12	26a621₁₂	26aabb₁₂
Base 13	19555c₁₃	195974₁₃
Base 14	129481₁₄	129819₁₄
Base 15	c9a84₁₅	c9d98₁₅
Base 16	9c4f9₁₆	9c7af₁₆