Compare 640257 vs 640261

Property	640257	640261
Type	composite number	prime
Unique factors	3	1
Total factors	3	1
Prime factorization	3¹ × 457¹ × 467¹	640261¹
Prime factorization	3 × 457 × 467	640261
Divisors count	8	2
Divisors	1, 3, 457, 467, 1371, 1401, 213419, 640257	1, 640261
Number of properties	0	5
Additive primes		20363rd
Lucky primes		5980th
Primes		52100th
Sexy primes (1st member)		11288th
Twin primes (2nd member)		5636th
Roman numberals
Base 2	10011100010100000001₂	10011100010100000101₂
Base 3	1012112021020₃	1012112021101₃
Base 4	2130110001₄	2130110011₄
Base 5	130442012₅	130442021₅
Base 6	21420053₆	21420101₆
Base 7	5304432₇	5304436₇
Base 8	2342401₈	2342405₈
Base 9	1175236₉	1175241₉
Base 10	640257₁₀	640261₁₀
Base 11	3a8042₁₁	3a8046₁₁
Base 12	26a629₁₂	26a631₁₂
Base 13	195567₁₃	19556b₁₃
Base 14	129489₁₄	12948d₁₄
Base 15	c9a8c₁₅	c9a91₁₅
Base 16	9c501₁₆	9c505₁₆