Compare 639671 vs 639680

Property	639671	639680
Type	prime	composite number
Unique factors	1	3
Total factors	1	8
Prime factorization	639671¹	2⁶ × 5¹ × 1999¹
Prime factorization	639671	2 × 2 × 2 × 2 × 2 × 2 × 5 × 1999
Divisors count	2	28
Divisors	1, 639671	1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 1999, 3998, 7996, 9995, 15992, 19990, 31984, 39980, 63968, 79960, 127936, 159920, 319840, 639680
Number of properties	3	0
Isolated primes	40795th
Primes	52050th
Sexy primes (1st member)	11280th
Roman numberals
Base 2	10011100001010110111₂	10011100001011000000₂
Base 3	1012111110112₃	1012111110212₃
Base 4	2130022313₄	2130023000₄
Base 5	130432141₅	130432210₅
Base 6	21413235₆	21413252₆
Base 7	5302634₇	5302646₇
Base 8	2341267₈	2341300₈
Base 9	1174415₉	1174425₉
Base 10	639671₁₀	639680₁₀
Base 11	3a765a₁₁	3a7668₁₁
Base 12	26a21b₁₂	26a228₁₂
Base 13	195206₁₃	195212₁₃
Base 14	12918b₁₄	129196₁₄
Base 15	c97eb₁₅	c9805₁₅
Base 16	9c2b7₁₆	9c2c0₁₆