Compare 640251 vs 640261

Property	640251	640261
Type	composite number	prime
Unique factors	3	1
Total factors	5	1
Prime factorization	3³ × 23¹ × 1031¹	640261¹
Prime factorization	3 × 3 × 3 × 23 × 1031	640261
Divisors count	16	2
Divisors	1, 3, 9, 23, 27, 69, 207, 621, 1031, 3093, 9279, 23713, 27837, 71139, 213417, 640251	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	10011100010011111011₂	10011100010100000101₂
Base 3	1012112021000₃	1012112021101₃
Base 4	2130103323₄	2130110011₄
Base 5	130442001₅	130442021₅
Base 6	21420043₆	21420101₆
Base 7	5304423₇	5304436₇
Base 8	2342373₈	2342405₈
Base 9	1175230₉	1175241₉
Base 10	640251₁₀	640261₁₀
Base 11	3a8037₁₁	3a8046₁₁
Base 12	26a623₁₂	26a631₁₂
Base 13	195561₁₃	19556b₁₃
Base 14	129483₁₄	12948d₁₄
Base 15	c9a86₁₅	c9a91₁₅
Base 16	9c4fb₁₆	9c505₁₆