Compare 642243 vs 642247

Property	642243	642247
Type	composite number	prime
Unique factors	4	1
Total factors	5	1
Prime factorization	3¹ × 7² × 17¹ × 257¹	642247¹
Prime factorization	3 × 7 × 7 × 17 × 257	642247
Divisors count	24	2
Divisors	1, 3, 7, 17, 21, 49, 51, 119, 147, 257, 357, 771, 833, 1799, 2499, 4369, 5397, 12593, 13107, 30583, 37779, 91749, 214081, 642243	1, 642247
Number of properties	0	6
Isolated primes		40944th
Lucky primes		5999th
Primes		52243rd
Sexy primes (1st member)		11321st
Sexy primes (2nd member)		11320th
Sexy prime triplets (2nd member)		2077th
Roman numberals
Base 2	10011100110011000011₂	10011100110011000111₂
Base 3	1012121222210₃	1012121222221₃
Base 4	2130303003₄	2130303013₄
Base 5	131022433₅	131022442₅
Base 6	21433203₆	21433211₆
Base 7	5313300₇	5313304₇
Base 8	2346303₈	2346307₈
Base 9	1177883₉	1177887₉
Base 10	642243₁₀	642247₁₀
Base 11	3a9588₁₁	3a9591₁₁
Base 12	26b803₁₂	26b807₁₂
Base 13	196434₁₃	196438₁₃
Base 14	12a0a7₁₄	12a0ab₁₄
Base 15	ca463₁₅	ca467₁₅
Base 16	9ccc3₁₆	9ccc7₁₆