Compare 645641 vs 645649

Property	645641	645649
Type	prime	prime
Unique factors	1	1
Total factors	1	1
Prime factorization	645641¹	645649¹
Prime factorization	645641	645649
Divisors count	2	2
Divisors	1, 645641	1, 645649
Number of properties	4	3
Happy primes	7475th
Isolated primes	41147th
Primes	52494th	52496th
Sexy primes (1st member)	11370th
Twin primes (2nd member)		5675th
Ulam primes		3851st
Roman numberals
Base 2	10011101101000001001₂	10011101101000010001₂
Base 3	1012210122122₃	1012210122221₃
Base 4	2131220021₄	2131220101₄
Base 5	131130031₅	131130044₅
Base 6	21501025₆	21501041₆
Base 7	5326223₇	5326234₇
Base 8	2355011₈	2355021₈
Base 9	1183578₉	1183587₉
Base 10	645641₁₀	645649₁₀
Base 11	401097₁₁	4010a4₁₁
Base 12	271775₁₂	271781₁₂
Base 13	197b49₁₃	197b54₁₃
Base 14	12b413₁₄	12b41b₁₄
Base 15	cb47b₁₅	cb484₁₅
Base 16	9da09₁₆	9da11₁₆