Compare 640307 vs 640309

Property	640307	640309
Type	prime	semiprime
Unique factors	1	2
Total factors	1	2
Prime factorization	640307¹	521¹ × 1229¹
Prime factorization	640307	521 × 1229
Divisors count	2	4
Divisors	1, 640307	1, 521, 1229, 640309
Number of properties	5	1
Chen primes	20390th
Cousin primes (2nd member)	5634th
Isolated primes	40833rd
Primes	52104th
Safe primes	3019th
Semiprimes		137207th
Roman numberals
Base 2	10011100010100110011₂	10011100010100110101₂
Base 3	1012112100002₃	1012112100011₃
Base 4	2130110303₄	2130110311₄
Base 5	130442212₅	130442214₅
Base 6	21420215₆	21420221₆
Base 7	5304533₇	5304535₇
Base 8	2342463₈	2342465₈
Base 9	1175302₉	1175304₉
Base 10	640307₁₀	640309₁₀
Base 11	3a8088₁₁	3a808a₁₁
Base 12	26a66b₁₂	26a671₁₂
Base 13	1955a5₁₃	1955a7₁₃
Base 14	1294c3₁₄	1294c5₁₄
Base 15	c9ac2₁₅	c9ac4₁₅
Base 16	9c533₁₆	9c535₁₆