λ
Sequence Observatory

8,405,669

8405669
Deficient Odd Prime

Starting at 8,405,669, the Collatz iteration reaches 1 after 305 steps. The first transition is 25217008; the starting value is odd with 2 positive divisors.

Prime Factor Structure

Factorization String 8405669
Distinct Prime Factors 1
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 2
Divisor Sum (σ) 8,405,670
Proper Divisor Sum 1
Digit Sum / Digital Root 38 (Root: 2)
Adjacent Primes #8405651 ← → #8405689

Radix Representation

Decimal 8405669
Binary 100000000100001010100101 (24 bits)
Octal 0o40041245
Hexadecimal 0x8042A5

Divisor Catalog (2)

1 8,405,669

Collatz Trajectory (305 steps to reach 1)

Iterative sequence n → n/2 (if even) or 3n+1 (if odd):

8,405,669 25,217,008 12,608,504 6,304,252 3,152,126 1,576,063 4,728,190 2,364,095 7,092,286 3,546,143 10,638,430 5,319,215 15,957,646 7,978,823 23,936,470 11,968,235 35,904,706 17,952,353 53,857,060 26,928,530 13,464,265 40,392,796 20,196,398 10,098,199 30,294,598 15,147,299 45,441,898 22,720,949 68,162,848 34,081,424 17,040,712 8,520,356 4,260,178 2,130,089 6,390,268 3,195,134 1,597,567 4,792,702 2,396,351 7,189,054 3,594,527 10,783,582 5,391,791 16,175,374 8,087,687 24,263,062 12,131,531 36,394,594 18,197,297 54,591,892 27,295,946 13,647,973 40,943,920 20,471,960 10,235,980 5,117,990 2,558,995 7,676,986 3,838,493 11,515,480

More profiles

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