Compare 640121 vs 640307

Property	640121	640307
Type	prime	prime
Unique factors	1	1
Total factors	1	1
Prime factorization	640121¹	640307¹
Prime factorization	640121	640307
Divisors count	2	2
Divisors	1, 640121	1, 640307
Number of properties	4	5
Chen primes	20382nd	20390th
Cousin primes (2nd member)		5634th
Isolated primes	40823rd	40833rd
Primes	52086th	52104th
Safe primes		3019th
Sexy primes (1st member)	11286th
Roman numberals
Base 2	10011100010001111001₂	10011100010100110011₂
Base 3	1012112002012₃	1012112100002₃
Base 4	2130101321₄	2130110303₄
Base 5	130440441₅	130442212₅
Base 6	21415305₆	21420215₆
Base 7	5304146₇	5304533₇
Base 8	2342171₈	2342463₈
Base 9	1175065₉	1175302₉
Base 10	640121₁₀	640307₁₀
Base 11	3a7a29₁₁	3a8088₁₁
Base 12	26a535₁₂	26a66b₁₂
Base 13	195491₁₃	1955a5₁₃
Base 14	1293cd₁₄	1294c3₁₄
Base 15	c99eb₁₅	c9ac2₁₅
Base 16	9c479₁₆	9c533₁₆