Compare 640121 vs 640247

Property	640121	640247
Type	prime	prime
Unique factors	1	1
Total factors	1	1
Prime factorization	640121¹	640247¹
Prime factorization	640121	640247
Divisors count	2	2
Divisors	1, 640121	1, 640247
Number of properties	4	5
Additive primes		20362nd
Chen primes	20382nd	20388th
Isolated primes	40823rd
Primes	52086th	52097th
Sexy primes (1st member)	11286th
Twin primes (1st member)		5635th
Ulam primes		3818th
Roman numberals
Base 2	10011100010001111001₂	10011100010011110111₂
Base 3	1012112002012₃	1012112020212₃
Base 4	2130101321₄	2130103313₄
Base 5	130440441₅	130441442₅
Base 6	21415305₆	21420035₆
Base 7	5304146₇	5304416₇
Base 8	2342171₈	2342367₈
Base 9	1175065₉	1175225₉
Base 10	640121₁₀	640247₁₀
Base 11	3a7a29₁₁	3a8033₁₁
Base 12	26a535₁₂	26a61b₁₂
Base 13	195491₁₃	19555a₁₃
Base 14	1293cd₁₄	12947d₁₄
Base 15	c99eb₁₅	c9a82₁₅
Base 16	9c479₁₆	9c4f7₁₆