Compare 640121 vs 640261

Property	640121	640261
Type	prime	prime
Unique factors	1	1
Total factors	1	1
Prime factorization	640121¹	640261¹
Prime factorization	640121	640261
Divisors count	2	2
Divisors	1, 640121	1, 640261
Number of properties	4	5
Additive primes		20363rd
Chen primes	20382nd
Isolated primes	40823rd
Lucky primes		5980th
Primes	52086th	52100th
Sexy primes (1st member)	11286th	11288th
Twin primes (2nd member)		5636th
Roman numberals
Base 2	10011100010001111001₂	10011100010100000101₂
Base 3	1012112002012₃	1012112021101₃
Base 4	2130101321₄	2130110011₄
Base 5	130440441₅	130442021₅
Base 6	21415305₆	21420101₆
Base 7	5304146₇	5304436₇
Base 8	2342171₈	2342405₈
Base 9	1175065₉	1175241₉
Base 10	640121₁₀	640261₁₀
Base 11	3a7a29₁₁	3a8046₁₁
Base 12	26a535₁₂	26a631₁₂
Base 13	195491₁₃	19556b₁₃
Base 14	1293cd₁₄	12948d₁₄
Base 15	c99eb₁₅	c9a91₁₅
Base 16	9c479₁₆	9c505₁₆