λ
Sequence Observatory

3,118,985

5 × 293 × 2129
Deficient Odd Composite

Starting at 3,118,985, the Collatz iteration reaches 1 after 182 steps. The first transition is 9356956; the starting value is odd with 8 positive divisors.

Prime Factor Structure

Factorization String 5 × 293 × 2129
Distinct Prime Factors 3
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 8
Divisor Sum (σ) 3,757,320
Proper Divisor Sum 638,335
Digit Sum / Digital Root 35 (Root: 8)
Adjacent Primes #3118949 ← → #3118987

Radix Representation

Decimal 3118985
Binary 1011111001011110001001 (22 bits)
Octal 0o13713611
Hexadecimal 0x2F9789

Divisor Catalog (8)

1 5 293 1,465 2,129 10,645 623,797 3,118,985

Collatz Trajectory (182 steps to reach 1)

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

3,118,985 9,356,956 4,678,478 2,339,239 7,017,718 3,508,859 10,526,578 5,263,289 15,789,868 7,894,934 3,947,467 11,842,402 5,921,201 17,763,604 8,881,802 4,440,901 13,322,704 6,661,352 3,330,676 1,665,338 832,669 2,498,008 1,249,004 624,502 312,251 936,754 468,377 1,405,132 702,566 351,283 1,053,850 526,925 1,580,776 790,388 395,194 197,597 592,792 296,396 148,198 74,099 222,298 111,149 333,448 166,724 83,362 41,681 125,044 62,522 31,261 93,784 46,892 23,446 11,723 35,170 17,585 52,756 26,378 13,189 39,568 19,784

More profiles

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