Compare 639679 vs 639687

Property	639679	639687
Type	prime	semiprime
Unique factors	1	2
Total factors	1	2
Prime factorization	639679¹	3¹ × 213229¹
Prime factorization	639679	3 × 213229
Divisors count	2	4
Divisors	1, 639679	1, 3, 213229, 639687
Number of properties	2	1
Primes	52052nd
Semiprimes		137075th
Twin primes (2nd member)	5629th
Roman numberals
Base 2	10011100001010111111₂	10011100001011000111₂
Base 3	1012111110211₃	1012111111010₃
Base 4	2130022333₄	2130023013₄
Base 5	130432204₅	130432222₅
Base 6	21413251₆	21413303₆
Base 7	5302645₇	5302656₇
Base 8	2341277₈	2341307₈
Base 9	1174424₉	1174433₉
Base 10	639679₁₀	639687₁₀
Base 11	3a7667₁₁	3a7674₁₁
Base 12	26a227₁₂	26a233₁₂
Base 13	195211₁₃	195219₁₃
Base 14	129195₁₄	12919d₁₄
Base 15	c9804₁₅	c980c₁₅
Base 16	9c2bf₁₆	9c2c7₁₆