λ
Sequence Observatory

2,574,629

1321 × 1949
Deficient Odd Composite

Starting at 2,574,629, the Collatz iteration reaches 1 after 125 steps. The first transition is 7723888; the starting value is odd with 4 positive divisors.

Prime Factor Structure

Factorization String 1321 × 1949
Distinct Prime Factors 2
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 4
Divisor Sum (σ) 2,577,900
Proper Divisor Sum 3,271
Digit Sum / Digital Root 35 (Root: 8)
Adjacent Primes #2574623 ← → #2574653

Radix Representation

Decimal 2574629
Binary 1001110100100100100101 (22 bits)
Octal 0o11644445
Hexadecimal 0x274925

Divisor Catalog (4)

1 1,321 1,949 2,574,629

Collatz Trajectory (125 steps to reach 1)

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

2,574,629 7,723,888 3,861,944 1,930,972 965,486 482,743 1,448,230 724,115 2,172,346 1,086,173 3,258,520 1,629,260 814,630 407,315 1,221,946 610,973 1,832,920 916,460 458,230 229,115 687,346 343,673 1,031,020 515,510 257,755 773,266 386,633 1,159,900 579,950 289,975 869,926 434,963 1,304,890 652,445 1,957,336 978,668 489,334 244,667 734,002 367,001 1,101,004 550,502 275,251 825,754 412,877 1,238,632 619,316 309,658 154,829 464,488 232,244 116,122 58,061 174,184 87,092 43,546 21,773 65,320 32,660 16,330

More profiles

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