λ
Sequence Observatory

2,574,661

2574661
Deficient Odd Prime

Starting at 2,574,661, the Collatz iteration reaches 1 after 249 steps. The first transition is 7723984; the starting value is odd with 2 positive divisors.

Prime Factor Structure

Factorization String 2574661
Distinct Prime Factors 1
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 2
Divisor Sum (σ) 2,574,662
Proper Divisor Sum 1
Digit Sum / Digital Root 31 (Root: 4)
Adjacent Primes #2574653 ← → #2574683

Radix Representation

Decimal 2574661
Binary 1001110100100101000101 (22 bits)
Octal 0o11644505
Hexadecimal 0x274945

Divisor Catalog (2)

Collatz Trajectory (249 steps to reach 1)

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

2,574,661 7,723,984 3,861,992 1,930,996 965,498 482,749 1,448,248 724,124 362,062 181,031 543,094 271,547 814,642 407,321 1,221,964 610,982 305,491 916,474 458,237 1,374,712 687,356 343,678 171,839 515,518 257,759 773,278 386,639 1,159,918 579,959 1,739,878 869,939 2,609,818 1,304,909 3,914,728 1,957,364 978,682 489,341 1,468,024 734,012 367,006 183,503 550,510 275,255 825,766 412,883 1,238,650 619,325 1,857,976 928,988 464,494 232,247 696,742 348,371 1,045,114 522,557 1,567,672 783,836 391,918 195,959 587,878

More profiles

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