2,691,025

5² × 107641

Starting at 2,691,025, the Collatz iteration reaches 1 after 63 steps. The first transition is 8073076; the starting value is odd with 6 positive divisors.

Prime Factor Structure

Factorization String 5^2 × 107641

Distinct Prime Factors 2

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 6

Divisor Sum (σ) 3,336,902

Proper Divisor Sum 645,877

Digit Sum / Digital Root 25 (Root: 7)

Adjacent Primes #2691019 ← → #2691037

Radix Representation

Decimal	2691025
Binary	1010010000111111010001 (22 bits)
Octal	0o12207721
Hexadecimal	0x290FD1

Divisor Catalog (6)

1 5 25 107,641 538,205 2,691,025

Collatz Trajectory (63 steps to reach 1)

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

2,691,025 8,073,076 4,036,538 2,018,269 6,054,808 3,027,404 1,513,702 756,851 2,270,554 1,135,277 3,405,832 1,702,916 851,458 425,729 1,277,188 638,594 319,297 957,892 478,946 239,473 718,420 359,210 179,605 538,816 269,408 134,704 67,352 33,676 16,838 8,419 25,258 12,629 37,888 18,944 9,472 4,736 2,368 1,184 592 296 148 74 37 112 56 28 14 7 22 11 34 17 52 26 13 40 20 10 5 16

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