Compare 640249 vs 640307

Property	640249	640307
Type	prime	prime
Unique factors	1	1
Total factors	1	1
Prime factorization	640249¹	640307¹
Prime factorization	640249	640307
Divisors count	2	2
Divisors	1, 640249	1, 640307
Number of properties	3	5
Chen primes		20390th
Cousin primes (2nd member)		5634th
Isolated primes		40833rd
Primes	52098th	52104th
Safe primes		3019th
Twin primes (2nd member)	5635th
Ulam primes	3819th
Roman numberals
Base 2	10011100010011111001₂	10011100010100110011₂
Base 3	1012112020221₃	1012112100002₃
Base 4	2130103321₄	2130110303₄
Base 5	130441444₅	130442212₅
Base 6	21420041₆	21420215₆
Base 7	5304421₇	5304533₇
Base 8	2342371₈	2342463₈
Base 9	1175227₉	1175302₉
Base 10	640249₁₀	640307₁₀
Base 11	3a8035₁₁	3a8088₁₁
Base 12	26a621₁₂	26a66b₁₂
Base 13	19555c₁₃	1955a5₁₃
Base 14	129481₁₄	1294c3₁₄
Base 15	c9a84₁₅	c9ac2₁₅
Base 16	9c4f9₁₆	9c533₁₆