Compare 640007 vs 640247

Property	640007	640247
Type	prime	prime
Unique factors	1	1
Total factors	1	1
Prime factorization	640007¹	640247¹
Prime factorization	640007	640247
Divisors count	2	2
Divisors	1, 640007	1, 640247
Number of properties	5	5
Additive primes	20350th	20362nd
Chen primes	20377th	20388th
Primes	52075th	52097th
Twin primes (1st member)	5632nd	5635th
Ulam primes	3817th	3818th
Roman numberals
Base 2	10011100010000000111₂	10011100010011110111₂
Base 3	1012111220222₃	1012112020212₃
Base 4	2130100013₄	2130103313₄
Base 5	130440012₅	130441442₅
Base 6	21414555₆	21420035₆
Base 7	5303624₇	5304416₇
Base 8	2342007₈	2342367₈
Base 9	1174828₉	1175225₉
Base 10	640007₁₀	640247₁₀
Base 11	3a7935₁₁	3a8033₁₁
Base 12	26a45b₁₂	26a61b₁₂
Base 13	195404₁₃	19555a₁₃
Base 14	12934b₁₄	12947d₁₄
Base 15	c9972₁₅	c9a82₁₅
Base 16	9c407₁₆	9c4f7₁₆