Compare 640681 vs 640687

Property	640681	640687
Type	semiprime	prime
Unique factors	2	1
Total factors	2	1
Prime factorization	59¹ × 10859¹	640687¹
Prime factorization	59 × 10859	640687
Divisors count	4	2
Divisors	1, 59, 10859, 640681	1, 640687
Number of properties	1	5
Additive primes		20373rd
Cousin primes (1st member)		5637th
Isolated primes		40852nd
Primes		52127th
Semiprimes	137287th
Super primes		5330th
Roman numberals
Base 2	10011100011010101001₂	10011100011010101111₂
Base 3	1012112211221₃	1012112212011₃
Base 4	2130122221₄	2130122233₄
Base 5	131000211₅	131000222₅
Base 6	21422041₆	21422051₆
Base 7	5305606₇	5305615₇
Base 8	2343251₈	2343257₈
Base 9	1175757₉	1175764₉
Base 10	640681₁₀	640687₁₀
Base 11	3a8398₁₁	3a83a3₁₁
Base 12	26a921₁₂	26a927₁₂
Base 13	195802₁₃	195808₁₃
Base 14	1296ad₁₄	1296b5₁₄
Base 15	c9c71₁₅	c9c77₁₅
Base 16	9c6a9₁₆	9c6af₁₆