Compare 640369 vs 640381

Property	640369	640381
Type	prime	composite number
Unique factors	1	2
Total factors	1	4
Prime factorization	640369¹	7³ × 1867¹
Prime factorization	640369	7 × 7 × 7 × 1867
Divisors count	2	8
Divisors	1, 640369	1, 7, 49, 343, 1867, 13069, 91483, 640381
Number of properties	4	0
Isolated primes	40836th
Lucky primes	5982nd
Primes	52107th
Sexy primes (2nd member)	11289th
Roman numberals
Base 2	10011100010101110001₂	10011100010101111101₂
Base 3	1012112102101₃	1012112102211₃
Base 4	2130111301₄	2130111331₄
Base 5	130442434₅	130443011₅
Base 6	21420401₆	21420421₆
Base 7	5304652₇	5305000₇
Base 8	2342561₈	2342575₈
Base 9	1175371₉	1175384₉
Base 10	640369₁₀	640381₁₀
Base 11	3a8134₁₁	3a8145₁₁
Base 12	26a701₁₂	26a711₁₂
Base 13	195622₁₃	195631₁₃
Base 14	129529₁₄	129537₁₄
Base 15	c9b14₁₅	c9b21₁₅
Base 16	9c571₁₆	9c57d₁₆