Compare 640247 vs 641819

Property	640247	641819
Type	prime	prime
Unique factors	1	1
Total factors	1	1
Prime factorization	640247¹	641819¹
Prime factorization	640247	641819
Divisors count	2	2
Divisors	1, 640247	1, 641819
Number of properties	5	5
Additive primes	20362nd	20406th
Chen primes	20388th	20424th
Primes	52097th	52206th
Sexy primes (2nd member)		11309th
Twin primes (1st member)	5635th	5646th
Ulam primes	3818th
Roman numberals
Base 2	10011100010011110111₂	10011100101100011011₂
Base 3	1012112020212₃	1012121102002₃
Base 4	2130103313₄	2130230123₄
Base 5	130441442₅	131014234₅
Base 6	21420035₆	21431215₆
Base 7	5304416₇	5312123₇
Base 8	2342367₈	2345433₈
Base 9	1175225₉	1177362₉
Base 10	640247₁₀	641819₁₀
Base 11	3a8033₁₁	3a9232₁₁
Base 12	26a61b₁₂	26b50b₁₂
Base 13	19555a₁₃	196199₁₃
Base 14	12947d₁₄	129c83₁₄
Base 15	c9a82₁₅	ca27e₁₅
Base 16	9c4f7₁₆	9cb1b₁₆