λ
Sequence Observatory

7,725,805

5 × 79 × 19559
Deficient Odd Composite

Starting at 7,725,805, the Collatz iteration reaches 1 after 204 steps. The first transition is 23177416; the starting value is odd with 8 positive divisors.

Prime Factor Structure

Factorization String 5 × 79 × 19559
Distinct Prime Factors 3
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 8
Divisor Sum (σ) 9,388,800
Proper Divisor Sum 1,662,995
Digit Sum / Digital Root 34 (Root: 7)
Adjacent Primes #7725797 ← → #7725821

Radix Representation

Decimal 7725805
Binary 11101011110001011101101 (23 bits)
Octal 0o35361355
Hexadecimal 0x75E2ED

Divisor Catalog (8)

1 5 79 395 19,559 97,795 1,545,161 7,725,805

Collatz Trajectory (204 steps to reach 1)

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

7,725,805 23,177,416 11,588,708 5,794,354 2,897,177 8,691,532 4,345,766 2,172,883 6,518,650 3,259,325 9,777,976 4,888,988 2,444,494 1,222,247 3,666,742 1,833,371 5,500,114 2,750,057 8,250,172 4,125,086 2,062,543 6,187,630 3,093,815 9,281,446 4,640,723 13,922,170 6,961,085 20,883,256 10,441,628 5,220,814 2,610,407 7,831,222 3,915,611 11,746,834 5,873,417 17,620,252 8,810,126 4,405,063 13,215,190 6,607,595 19,822,786 9,911,393 29,734,180 14,867,090 7,433,545 22,300,636 11,150,318 5,575,159 16,725,478 8,362,739 25,088,218 12,544,109 37,632,328 18,816,164 9,408,082 4,704,041 14,112,124 7,056,062 3,528,031 10,584,094

More profiles

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