Compare 640247 vs 640261

Property	640247	640261
Type	prime	prime
Unique factors	1	1
Total factors	1	1
Prime factorization	640247¹	640261¹
Prime factorization	640247	640261
Divisors count	2	2
Divisors	1, 640247	1, 640261
Number of properties	5	5
Additive primes	20362nd	20363rd
Chen primes	20388th
Lucky primes		5980th
Primes	52097th	52100th
Sexy primes (1st member)		11288th
Twin primes (1st member)	5635th
Twin primes (2nd member)		5636th
Ulam primes	3818th
Roman numberals
Base 2	10011100010011110111₂	10011100010100000101₂
Base 3	1012112020212₃	1012112021101₃
Base 4	2130103313₄	2130110011₄
Base 5	130441442₅	130442021₅
Base 6	21420035₆	21420101₆
Base 7	5304416₇	5304436₇
Base 8	2342367₈	2342405₈
Base 9	1175225₉	1175241₉
Base 10	640247₁₀	640261₁₀
Base 11	3a8033₁₁	3a8046₁₁
Base 12	26a61b₁₂	26a631₁₂
Base 13	19555a₁₃	19556b₁₃
Base 14	12947d₁₄	12948d₁₄
Base 15	c9a82₁₅	c9a91₁₅
Base 16	9c4f7₁₆	9c505₁₆