λ
Sequence Observatory

1,898,412

22 × 3 × 158201
Abundant Even Composite

Starting at 1,898,412, the Collatz iteration reaches 1 after 101 steps. The first transition is 949206; the starting value is even with 12 positive divisors.

Prime Factor Structure

Factorization String 2^2 × 3 × 158201
Distinct Prime Factors 3
Square Status No
Abundance Measure Abundant

Analytical Properties

Total Divisors 12
Divisor Sum (σ) 4,429,656
Proper Divisor Sum 2,531,244
Digit Sum / Digital Root 33 (Root: 6)
Adjacent Primes #1898389 ← → #1898417

Radix Representation

Decimal 1898412
Binary 111001111011110101100 (21 bits)
Octal 0o7173654
Hexadecimal 0x1CF7AC

Divisor Catalog (12)

1 2 3 4 6 12 158,201 316,402 474,603 632,804 949,206 1,898,412

Collatz Trajectory (101 steps to reach 1)

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

1,898,412 949,206 474,603 1,423,810 711,905 2,135,716 1,067,858 533,929 1,601,788 800,894 400,447 1,201,342 600,671 1,802,014 901,007 2,703,022 1,351,511 4,054,534 2,027,267 6,081,802 3,040,901 9,122,704 4,561,352 2,280,676 1,140,338 570,169 1,710,508 855,254 427,627 1,282,882 641,441 1,924,324 962,162 481,081 1,443,244 721,622 360,811 1,082,434 541,217 1,623,652 811,826 405,913 1,217,740 608,870 304,435 913,306 456,653 1,369,960 684,980 342,490 171,245 513,736 256,868 128,434 64,217 192,652 96,326 48,163 144,490 72,245

More profiles

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