Compare 640247 vs 640691

Property	640247	640691
Type	prime	prime
Unique factors	1	1
Total factors	1	1
Prime factorization	640247¹	640691¹
Prime factorization	640247	640691
Divisors count	2	2
Divisors	1, 640247	1, 640691
Number of properties	5	5
Additive primes	20362nd
Chen primes	20388th	20397th
Cousin primes (2nd member)		5637th
Isolated primes		40853rd
Primes	52097th	52128th
Sophie germain primes		5311th
Twin primes (1st member)	5635th
Ulam primes	3818th
Roman numberals
Base 2	10011100010011110111₂	10011100011010110011₂
Base 3	1012112020212₃	1012112212022₃
Base 4	2130103313₄	2130122303₄
Base 5	130441442₅	131000231₅
Base 6	21420035₆	21422055₆
Base 7	5304416₇	5305622₇
Base 8	2342367₈	2343263₈
Base 9	1175225₉	1175768₉
Base 10	640247₁₀	640691₁₀
Base 11	3a8033₁₁	3a83a7₁₁
Base 12	26a61b₁₂	26a92b₁₂
Base 13	19555a₁₃	19580c₁₃
Base 14	12947d₁₄	1296b9₁₄
Base 15	c9a82₁₅	c9c7b₁₅
Base 16	9c4f7₁₆	9c6b3₁₆